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OUI Lookup Tool

The Wireshark OUI lookup tool provides an easy way to look up OUIs and other MAC address prefixes. It uses the Wireshark manufacturer database , which is a list of OUIs and MAC addresses compiled from a number of sources.

Directions : Type or paste in a list of OUIs, MAC addresses, or descriptions below. OUIs and MAC addresses may be colon-, hyphen-, or period-separated.

Examples : 0000.0c 08:00:20 00-00-0C-CC-CC-CC 00d9.d110.21f9 missouri

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IANA OUI Ethernet Numbers

mac address oui assignment

Registries included below

IANA Unicast 48-bit MAC Addresses

Iana multicast 48-bit mac addresses, iana 64-bit mac addresses, the cfxxxx series, snap protocol numbers, iana link layer discovery protocol (lldp) tlv subtypes, iana mac address block.

mac address oui assignment

Contact Information

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MAC Address Lookup

Sample MAC Address 40-A8-F0-4F-50-9E or OUI 40-A8-F0

Our MAC address lookup tool is designed with simplicity and user-friendliness, ensuring a seamless experience for users encountering networking problems. With its intuitive interface, users can effortlessly enter or copy-paste MAC address(es) and instantly retrieve valuable information.

Whether you need to troubleshoot connectivity issues, manage network inventory, or enhance security measures, our tool provides quick and reliable results.

Say goodbye to complex processes and hello to an efficient solution that assists you in addressing your networking challenges with ease.

mac_address

About MAC Address Vendor Lookup

MAC Address Vendor Lookup is a powerful tool that enables users to identify the manufacturer or vendor of a network device by analyzing its MAC address. MAC (Media Access Control) addresses are unique identifiers assigned to network interfaces, such as Ethernet cards and Wi-Fi adapters.

The MAC Address Lookup provides a convenient and efficient way to gather information about the origin and manufacturer of a particular device. Users can quickly retrieve detailed information regarding the devices vendor by simply inputting a MAC address into the online lookup tool.

This tool leverages a comprehensive database that contains registered MAC addresses and their corresponding manufacturers, as assigned by the IEEE. The database is regularly updated to ensure accuracy and to accommodate new MAC addresses as they are assigned.

Real-Life Applications of Our MAC Lookup

Network troubleshooting, network security, vendor support & documentation, network optimization.

mac address oui assignment

Whether you are a network administrator or a private user, MAC OUI lookup will assist you in diagnosing network connectivity problems. Identifying the manufacturer associated with a MAC address makes it possible to pinpoint the specific device causing issues and take the necessary troubleshooting measures.

Our tool enhances network security by enabling users to identify unauthorized network devices. By comparing MAC addresses to a list of authorized devices, you can detect potential security violations or unauthorized access attempts, enhancing your networks security.

Our MAC vendor lookup tool facilitates users in locating vendor-specific documentation and support. You can readily access firmware updates, configuration guidelines, and troubleshooting resources by identifying the devices manufacturer.

You can obtain insight into all sorts of devices on your network using our tool. This information is useful for network monitoring and traffic analysis, allowing you to optimize network resources, identify potential bottlenecks, and make well-informed decisions to enhance network performance overall.

Whether you are a network administrator, IT professional, or a curious user, the MAC Address Lookup provides valuable insights into the origin and manufacturer of network devices, enabling you to make informed decisions and maintain network security effectively.

How Does Our MAC Vendor Lookup Work?

Our MAC Vendor Lookup tool utilizes a vast database to retrieve information about a MAC address, including the original manufacturer, prefix, postfix, and country of origin. This tool is particularly useful for verifying the authenticity of a MAC address by comparing it with the OUI vendor database.

mac address oui assignment

  • Access the MAC Address Lookup tool.
  • Input the MAC Address (40-A8-F0-4F-50-9E) or OUI (40-A8-F0) into the designated field to check its vendor. Or you can enter the vendor name (Hewlett Packard) to check its MAC address(es) range in detail.
  • The tool scans the MAC Address Vendor Database to identify the MAC address and promptly presents details about the devices manufacturer.
  • The information displayed includes the name of the company that originally manufactured the device and the associated prefix and postfix of the MAC address.
  • Additionally, our tool provides information about the country where the device was manufactured, offering valuable insights into its origin.

Users can verify whether their device’s MAC address corresponds to its original vendor listed in the OUI vendor database by performing a lookup MAC Address. This process ensures the accuracy and legitimacy of the MAC address, aiding in network management, security, and device authentication.

Why Choose Our MAC Address Lookup Tool

  • Accurate and Up-to-Date Database
  • User-Friendly Interface
  • Fast Response Time
  • Multiple Input Formats
  • API Availability
  • Privacy and Security
  • Mobile Friendly
  • No Subscription Fees

mac address oui assignment

Accurate and Up-To-Date Database:

This tool has an extensive and regularly updated database that contains information about MAC address assignments and associated vendors. This ensures accurate and reliable results.

User-Friendly Interface:

MAC address lookup tool provides a user-friendly interface that allows users to easily enter the MAC address and retrieve the vendor information without any complexity or technical knowledge requirements.

Fast Response Time:

MAC OUI lookup provides quick results, delivering vendor information promptly. Users will not have to wait an extended period to obtain the lookup results.

Multiple Input Formats:

It supports different input formats for MAC addresses, such as colons, hyphens, or plain hexadecimal values, to accommodate various conventions used by different systems. For Example, Binary format, (1001110101101100), Hexadecimal format, (4CCAB70A9D6C), and Colon delimited MAC address, (4C:CA: B7:0A:9D:6C).

API Availability:

An API (Application Programming Interface) is available for integration with other systems or applications, allowing developers to incorporate MAC address lookup functionality into their tools or software.

Privacy and Security:

We strictly prioritize user privacy and handle MAC addresses securely. They are not stored or misused MAC addresses users enter for vendor lookup purposes.

Mobile-Friendly

It also has a web-based interface that’s mobile-friendly and responsive, allowing users to perform MAC address lookups conveniently from their smartphones or tablets.

No Subscription Fees:

Identify the device by MAC Address online without paying a single penny—no need to pay for premium subscriptions when you can do it all for free.

How Can I Get a List of All MAC Addresses of a Vendor?

Frequently asked questions (faqs), what information can i get using the mac lookup tool.

A MAC address lookup can provide details about the manufacturer or vendor of a MAC address. This comprises information such as the company name, address, etc.

Is our tool for lookup MAC addresses free to use?

You can access it for free whenever you need to look up a MAC address. There’s no need for a premium subscription to use any of the features.

Is it legal to use a MAC address finder?

Yes, using a MAC address finder is legal. It can be used for network troubleshooting, inventory management, network security, and other practical applications.

Can I identify the device by MAC address online?

You can lookup MAC addresses for devices on any network as long as you can access the devices MAC address and our MAC address finder.

Can the MAC address be represented in binary format?

Typically, MAC addresses are represented in binary format. A MAC address has 48 bits (6 bytes) and is typically expressed as six pairs of hexadecimal integers separated by colons or hyphens. Each hexadecimal digit corresponds to 4 bits, giving a MAC address in 12 hexadecimal characters.

A MAC address such as "00:1A:2B:3C:4D:5E" can be represented in binary as follows: 00000000:00011010:00101011:00111100:01001101:01011110

Each pair of hexadecimal numerals corresponds to an 8-bit binary value in this representation. The binary format is beneficial for low-level network operations and calculations involving MAC addresses.

MAC Address Lookup

Find the vendor name of a device by entering an OUI or a MAC address

Search for manufacturer by MAC address

Just input the MAC address or the OUI and you will be shown the name, address, and country of its vendor.

In addition, we provide information on the history of MAC prefixes, including any changes to vendor names or addresses.

An MA-L (MAC Address Block Large) assignment includes an OUI and large blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.

An MA-M (MAC Address Block Medium) assignment includes medium blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.

An MA-S (MAC Address Block Small) assignment includes an OUI-36 and small blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.

A unique 24-bit identifier that cannot be used to generate EUI-48 or EUI-64 values. Therefore, the CID (Company ID) is especially applicable in applications where unique MAC addresses are not required.

IAB, Individual Address Block, is an inactive registry activity, which has been replaced by the MA-S registry product as of January 1,2014. The owner of an already assigned IAB may continue to use the assignment until its exhaustion.

Instructions/Notes

Click to learn more about MAC Address & OUI 

Every device that communicates on a network is assigned a unique 6-byte (48-bit) Media Access Control (MAC) address by the manufacturer. This address, also called a hardware address or physical address, is baked onto the ROM firmware (sometimes referred to as the burned in address) of the network card, router, firewall, network switch, wireless access point, and other networking devices manufactured.

MAC Address

Manufacturers are all assigned a unique set of 3-byte codes called the Organizationally Unique Identifier (OUI ). The 3-byte code (sometimes referred to as a vendor code) becomes the first three bytes (aka octets) of the 6-byte MAC address. The last three bytes is a unique value that the manufacturers assigns themselves (e.g., the serial number). No two network devices/cards in the world should have the same MAC address. If there happens to be two network devices/cards with the same 6-byte MAC address and they happen to be on the same network, reliable network communication cannot take place.

MAC Address

Where to Find Your MAC Address

Mac address example.

00-0F-66-D0-69-13 (can also be written as 000F.66D0.7654 or as 00:0F:66:D0:69:13)

In this example, the first 3-byte code (00-0F-66) is the OUI and identifies Linksys/Cisco as the manufacturer. The last three-byte code (D0:69:13) identifies the unique unit Linksys/Cisco manufactured.

With this arrangement, MAC address will uniquely identify a specific network device/card in the world. The first three bytes identifies the manufacturer and the last three bytes identifies the specific device unit and potentially identify the customer it is registered with.

Result & Lookup History (10 Maximum)

Manufacturer's oui list.

Computer Networking: Collection Of Three Books

mac address oui assignment

MAC Address Lookup

  • MAC Address Generator
  • Cisco VendorMACs.xml

Enter any MAC address, OUI , or IAB below to lookup the manufacturer, location, and more

Where can I find my MAC Address?

Mac address details, more registries.

We have just added additional IEEE registries, including...

  • MA-L: IEEE MAC Address Large (24-bit block size)
  • MA-M: IEEE MAC Address Medium (28-bit block size)
  • MA-S: IEEE MAC Address Small (36-bit block size)
  • OUI24: Organizationally Unique Identifier (24-bit block size)
  • OUI36: Organizationally Unique Identifier (36-bit block size)
  • IAB: Individual Address Blocks (36-bit block size)
  • CID: Company ID Blocks (24-bit block size)
  • EUI48: Extended Unique Identifier (48-bit block size)

If you find any issues, have an idea on what to add or improve on, or just have a question, please let us know by going to our contact page. We would love to hear from you! Any feedback is appreciated!

May 2024 Update: Great News! The API is enabled again! Plus an updated site is just around the corner!

First we would like to thank all our loyal users, especially the ones who have donated!

Since we have been subject to abuse of our API from several large companies and smart phone app creators who have incorrectly implemented our API, we have essentially been DDoSed for the past few months. (and our SSL cert expiring *doh*)

We have tested the new site a few times during off-peak hours and the results are extremely promising! If you would like to help test our beta site, please Contact Us and let us know you are interested in the beta. We will get back to you with a link when the beta is live.

Please feel free to contact us via our Contact Us page with any questions, improvements, requests, ideas, or anything at all you may have.

Especially if you have any improvements or feature requests for the new site, we will accomidate and pack as many features as we can into the new site before it goes live!

MAC Address Lookup RESTful API

We have a free, simple to use RESTful API available for you to use in your own applications! Our simple to use RESTful API makes it easy to implement into any application you are building.

Check out our API!

More MAC Address Tools

Here's a bunch more MAC Address related stuff we offer!

  • Batch/Multi/List MAC Address Lookup
  • Random MAC Address Generator
  • MAC Address Lookup API
  • MAC Address Database Search
  • Updated Cisco VendorMACs.xml
  • Browse Our Database

Windows

  • Click on Start button, type cmd and press ENTER
  • In the CMD prompt, type ipconfig /all and press ENTER
  • You will see the MAC address following Physical Address 00-00-00-00-00-00

Mac OS X

  • From the Apple Menu in the upper left choose System Preferences
  • Choose the Network Preferences and select Airport (for Wireless) or Built in Ethernet (for Ethernet card) from the Show menu
  • The MAC address will be listed at the bottom of the TCP/IP tab as the Airport ID or Ethernet Address

Linux

  • Open any terminal
  • Type ifconfig -a and press ENTER
  • You will see the MAC address in this format 00:00:00:00:00:00 following HWaddr

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VMware Organizationally Unique Identifier (OUI) allocation assigns MAC addresses based on the default VMware OUI 00:50:56 and the vCenter Server ID.

VMware OUI allocation is the default MAC address assignment model for virtual machines. The allocation works with up to 64 vCenter Server instances, and each vCenter Server can assign up to 64000 unique MAC addresses. The VMware OUI allocation scheme is suitable for small scale deployments.

MAC Address Format

According to the VMware OUI allocation scheme, a MAC address has the format 00:50:56: XX : YY : ZZ where 00:50:56 represents the VMware OUI, XX is calculated as (128+ vCenter Server ID), and YY and ZZ are random two-digit hexadecimal numbers.

The addresses created through the VMware OUI allocation are in the range 00:50:56:80: YY : ZZ - 00:50:56:BF: YY : ZZ .

MacAddress.io

MAC address vendor lookup

Example 44:38:39:ff:ef:57

By a given MAC address/OUI/IAB, retrieve OUI vendor information, detect virtual machines, manufacturer, locations, read the information encoded in the MAC , and get our research's results regarding any MAC address, OUI, IAB, IEEE.

Trusted by the following companies

Flex.com

and many more...

Download an exhaustive MAC Address Vendor Database for your educational, business or enterprise needs.

Our database comes in the following forms: JSON, CSV, XML, Cisco vendorMacs.xml for maximum compatibility and fast integration into existing systems. The API version is also available.

OUI and MAC address lookup

Oui ieee lookup.

OUI IEEE LOOKUP

Decoding the IEEE OUI Lookup: Unveiling the Identity of Networked Devices

In the intricate landscape of networking, every device is assigned a unique identifier known as a MAC (Media Access Control) address, which comprises an Organizationally Unique Identifier (OUI). At the heart of this identifier lies a fascinating tool—the IEEE OUI (Organizationally Unique Identifier) Lookup. This tool unveils the identity of networked devices by deciphering the OUI embedded within their MAC addresses. In this comprehensive exploration, we will delve into the realm of IEEE OUI Lookup, understanding its significance, how it operates, and the wealth of information it provides about the vast array of devices that populate our interconnected world.

Unveiling the MAC Address and OUI: Building Blocks of Device Identification

Before delving into the specifics of IEEE OUI Lookup, it’s crucial to establish a foundational understanding of MAC addresses, the OUI within them, and their role in device identification.

  • MAC Addresses as Unique Identifiers: MAC addresses, typically 48 bits in length, serve as unique identifiers assigned to network interface cards (NICs) or network adapters. These addresses are essential for facilitating communication within local networks.
  • Organizationally Unique Identifier (OUI): The first 24 bits (the first three octets) of a MAC address constitute the OUI. This portion is assigned by the IEEE and serves as a unique identifier for the organization or manufacturer responsible for the device’s network interface.
  • Unique Digital Fingerprint: The OUI essentially acts as a digital fingerprint, allowing network administrators, security professionals, and enthusiasts to trace the origins of a networked device back to its manufacturer or organization.

Significance of IEEE OUI Lookup: Deciphering Device Origins

IEEE OUI Lookup stands as a powerful tool that enables users to decode the OUI within MAC addresses, revealing valuable information about the manufacturer or organization behind each networked device. Understanding the significance of IEEE OUI Lookup provides insights into the origins of devices that populate our interconnected networks.

  • Device Identification: IEEE OUI Lookup allows for the identification of the manufacturer or organization associated with a specific device’s MAC address. This information is particularly valuable for network administrators seeking to understand the composition of their networks.
  • Inventory Management: In large-scale networks and enterprise environments, IEEE OUI Lookup facilitates efficient inventory management. It enables administrators to quickly ascertain the manufacturers of devices connected to the network, aiding in asset tracking and organization.
  • Security Enhancement: The ability to identify device manufacturers through IEEE OUI Lookup contributes to network security. Administrators can quickly discern unauthorized devices or those from unknown manufacturers, helping to detect and mitigate potential security threats.
  • Device Troubleshooting: When troubleshooting network issues, IEEE OUI Lookup provides an additional layer of information. Knowing the manufacturer of a device can aid in diagnosing problems related to specific hardware models or configurations.
  • Compliance and Policies: Organizations often have policies or compliance requirements regarding the types of devices permitted on their networks. IEEE OUI Lookup assists in enforcing these policies by identifying the manufacturers of connected devices.

OUI IEEE LOOKUP

How IEEE OUI Lookup Works: Navigating Manufacturer Identifiers

IEEE OUI Lookup operates by deciphering the OUI portion of a MAC address and associating it with the manufacturer or organization responsible for the device’s network interface. The process involves the following steps:

  • OUI Extraction: The first 24 bits of a MAC address, representing the OUI, are extracted. This process isolates the unique identifier associated with the device’s manufacturer.
  • Database Query: The extracted OUI is queried against databases containing mappings between OUIs and manufacturers. These databases are typically maintained and updated by organizations such as the IEEE.
  • Manufacturer Identification: The queried OUI is matched to entries in the database, revealing the manufacturer or organization associated with that specific portion of the MAC address.
  • Information Display: IEEE OUI Lookup tools then display detailed information about the manufacturer, which may include the company name, address, and additional details. This information offers valuable insights into the origins of the networked device.
  • User Interface: IEEE OUI Lookup tools often provide user-friendly interfaces, allowing users to input or paste MAC addresses for quick identification. Some tools also offer APIs for programmatic access to OUI information.

Diversity in Device Manufacturers: A Global Tapestry of OUIs

The landscape of IEEE OUIs is characterized by a rich diversity of manufacturers, each assigned a unique identifier that reflects its role in the realm of networking hardware. Manufacturers span the spectrum from industry giants to specialized players, contributing to the intricate mosaic of networked devices.

  • Industry Leaders: Prominent technology companies, including household names such as Apple, Microsoft, and Cisco, each have their distinct OUIs reflecting their significant role in shaping the landscape of networking technology.
  • Specialized Manufacturers: Beyond the well-known entities, specialized manufacturers catering to specific niches contribute to the diversity of OUIs. These may include manufacturers of industrial IoT devices, medical equipment, or components for specific industries.
  • Global Representation: OUIs are assigned globally, representing manufacturers from various countries and regions. This global distribution underscores the interconnected nature of the modern world, where devices from diverse origins contribute to the fabric of networks.

Implications for Networked Environments: Enhancing Visibility and Control

The application of IEEE OUI Lookup within networked environments carries significant implications for visibility, control, and the overall management of interconnected devices.

  • Network Visibility: IEEE OUI Lookup enhances network visibility by providing administrators with detailed insights into the types of devices connected to their networks. This information extends beyond IP addresses, offering a more comprehensive view of the hardware ecosystem.
  • Device Classification: Knowing the manufacturer of devices enables administrators to classify and categorize devices based on their hardware origins. This classification aids in creating device inventories and implementing policies based on device types.
  • Security Policies: IEEE OUI Lookup supports the implementation of security policies by enabling administrators to identify and manage devices from specific manufacturers. This can be crucial in enforcing access controls and preventing the entry of unauthorized devices.
  • Resource Allocation: In environments where resource allocation is critical, such as in enterprise networks, IEEE OUI Lookup assists in optimizing resource allocation by identifying the types of devices that require specific network resources.
  • Forensic Analysis: In the event of security incidents or anomalies, IEEE OUI Lookup can be a valuable tool for forensic analysis. Identifying the manufacturers of devices involved in security events helps in understanding the nature of incidents and planning appropriate responses.

Privacy Considerations in IEEE OUI Lookup: Balancing Information and Anonymity

While IEEE OUI Lookup provides valuable information about device manufacturers, it also raises privacy considerations. Striking a balance between gaining insights into networked environments and preserving user privacy is essential.

  • Anonymous MAC Addresses: Some devices, particularly those designed with privacy in mind, may use randomized or anonymous MAC addresses. This practice prevents the tracking of devices based on their OUIs and adds a layer of privacy for users.
  • Ethical Use: Users and administrators employing IEEE OUI Lookup tools should do so ethically and responsibly. Avoiding the misuse of information and respecting privacy rights is paramount.
  • User Consent: In scenarios where MAC addresses are linked to user identities, obtaining user consent for the collection and use of such information is crucial. Transparency in data practices fosters trust in networked environments.

OUI IEEE LOOKUP

Conclusion: Illuminating Device Identities with IEEE OUI Lookup

In the dynamic landscape of interconnected devices that define our modern world, IEEE OUI Lookup emerges as a powerful tool for illuminating the identities of networked hardware. From routers and smartphones to IoT devices and beyond, the OUI portion of MAC addresses provides a window into the diverse landscape of device manufacturers.

As networked environments continue to evolve, fueled by innovation and connectivity, the responsible use of IEEE OUI Lookup contributes to enhanced visibility, security, and control. By understanding the manufacturers behind the devices that populate our networks, administrators, security professionals, and enthusiasts can navigate the complexities of networking with precision, ensuring a harmonious and secure digital ecosystem. In conclusion, IEEE OUI Lookup is more than a technical tool; it is a key that unlocks the doors to the diverse and fascinating world of device identities within the expansive realm of networked connectivity.

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MAC Address Block Small (MA-S)

MA-S is a 36-bit identifier that can be used to create various extended identifiers. It is most often used to create IEEE 802-defined MAC addresses (EUI-48 and EUI-64). The MA-S does not include assignment of an OUI.

The MA-S assignment may be appended with 12 organization-supplied bits to form an EUI-48 or 28 organization-supplied bits to form an EUI-64. The MA-S assignment may also be used as an OUI-36 as specified in various standards. The MA-S assignment may also be used to generate EUI-60 (deprecated), TCDI-40, MAC-48 (obsolete term), and create multicast addresses (per IEEE Std 802). The MA-S assignment may be used as an OUI-36 and to create various extended identifiers based on the OUI-36.

Applications making use of an MA-S assignment should make no assumptions about the bit pattern that will be present in the (24-bit most-significant) OUI portion of the assigned MA-S.

For more information, please see the tutorial “ Guidelines for Use of Extended Unique Identifier (EUI), Organizationally Unique Identifier (OUI), and Company ID (CID) “.

Registration Fees

Application information.

Please search the public listing to determine whether your organization has already been issued an assignment. If so, you may email us to obtain contact information for the assignment.

  • Log in or create an account in order to apply for an assignment.
  • A tracking number will be sent via email to the applicant. Any questions regarding your application will be sent via email to the primary email address provided at time of application.
  • Applications are processed within seven (7) business days from receipt of payment. Be advised that the credit card will be charged once the application is submitted. Assignment details and a Paid Invoice will be available for download once the application is approved.
  • Unless otherwise noted, applications are valid for 30 days.
  • Since the public listing is updated once every 24 hours, new assignments will not be immediately viewable on the directory.

Related Standards

The OUI defined in IEEE 802®-2001 can be used to generate 48-bit Universal LAN MAC addresses to uniquely identify Local and Municipal Area Networks stations, and Protocol Identifiers to identify public and private protocols. These are used in LAN and MAN applications. The relevant standards include but not limited to:

  • CSMA/CD (IEEE 802.3™, ISO 8802-3)
  • Token Bus (IEEE 802.4™, ISO 8802-4)
  • Token Ring (IEEE 802.5™, ISO/IEC 8802-5)
  • IEEE 802.6™ (ISO/IEC DIS 8802-6) FDDI (ISO 9314-2)
  • WLAN (IEEE 802.11™, ISO/IEC 8802-1

The ‘company_id’ relevant standards as defined in IEEE 1212?-1991 Control and Status Register (CSR) Architecture referenced by IEEE 896.2™-1991 Futurebus+Physical Layers and Profiles include:

  • IEEE Std 1596™-1992 Scalable Coherent Interface
  • IEEE Std 1394™-1995 Serial Bus document. In this context, the 24-bit company_id value is a portion of the 32-bit Module_Vendor_Id ROM location (and related locations) and uniquely identifies hardware vendors and I/O software interface architectures.
  • ANSI X3.230-1994 Fibre Channel Standard

The IEEE Registration Authority will assign an additional OUI-36 to any organization requesting one, providing they submit a letter on company letterhead to the IEEE Registration Authority c/o IEEE Standards Department, stating that their company will not “ship” product in the new block assignment until well after they have reached (shipped) at least 95% of the block assignment, in the context of a specified standard. Your company should ensure that large numbers of derived identifiers are not left unused.

  • Infographic
  • Apply for Assignment
  • Information Change Form
  • Credit Application Form
  • Contact the IEEE Registration Authority
  • Manufacturer ID
  • LLC Application
  • LLC Public Listing
  • LLC Application (PDF)
  • URN Application (PDF)
  • TDL Application (PDF)
  • PSID Application (PDF)
  • PSID Public Listing
  • PSID Information Change Form
  • IEEE 802.16 Operator ID
  • Public Listing
  • Application (PDF)
  • STID Public Listing
  • STID Application (PDF)
  • sdoId Application (PDF)
  • AcpcTreeId Application
  • AcpcTreeId Public Listing
  • AcpcTreeId Information Change Form
  • CtlSeriesId Application
  • CtlSeriesId Public Listing
  • CtlSeriesId Information Change Form

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IMAGES

  1. What is MAC Address: Explanation

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  2. What is MAC address or Layer 2 address or physical address

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  3. How to Find an IP Address using a MAC Address: Step-by-Step Guide

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  4. How To Find Mac Address On Windows 10 [Easiest way ]

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  5. Class 2 Assignment

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  6. MAC Address OUI NIC

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COMMENTS

  1. Wireshark · OUI Lookup Tool

    The Wireshark OUI lookup tool provides an easy way to look up OUIs and other MAC address prefixes. It uses the Wireshark manufacturer database, which is a list of OUIs and MAC addresses compiled from a number of sources. Type or paste in a list of OUIs, MAC addresses, or descriptions below. OUIs and MAC addresses may be colon-, hyphen-, or ...

  2. IEEE SA

    MAC Address Block Large (MA-L) An MA-L assignment includes an OUI and large blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers. Learn More. MAC Address Block Medium (MA-M)

  3. IANA OUI Ethernet Numbers

    This page has assignments by IANA as specified in to be under the IANA OUI. For some information on IEEE 802 number assignments by the IEEE Registration Authority and how to contact that authority, see the [IANA registry ieee-802-numbers]. Available Formats XML HTML Plain text. Registries included below. IANA MAC ADDRESS BLOCK

  4. Organizationally unique identifier

    An organizationally unique identifier (OUI) is a 24-bit number that uniquely identifies a vendor, manufacturer, or other organization.. OUIs are purchased from the Institute of Electrical and Electronics Engineers (IEEE) Registration Authority by the assignee (IEEE term for the vendor, manufacturer, or other organization). Only assignment from MA-L registry assigns new OUI.

  5. MAC VENDOR OUI LOOKUP

    MAC Addresses as Identifiers: MAC addresses, typically 48 bits in length, serve as unique identifiers assigned to network interface cards (NICs) or network adapters. ... MAC Vendor OUI Lookup operates by decoding the OUI portion of a MAC address and associating it with the manufacturer or organization responsible for the device's network ...

  6. Ieee Sa

    The OUI included in the MA-L assignment may be appended with 24 organization-supplied bits to form a EUI-48 or 40 organization-supplied bits to form an EUI-64. The included OUI may also be used to generate EUI-60 (deprecated), CDI-32, TCDI-40, MAC-48 (obsolete term), create multicast addresses (per IEEE Std 802), and as a unique root for ...

  7. MAC Address Vendor Lookup

    The public Rest API is available for free and provides a powerful tool for retrieving detailed vendor information about any MAC address or OUI. With this API, you can seamlessly integrate MAC address and OUI lookup functionality into your applications, services, or systems. More info...

  8. MAC OUI LOOKUP TOOL

    MAC OUI Lookup tools operate by deciphering the OUI portion of a MAC address and associating it with the manufacturer or organization responsible for the device's network interface. The process involves several key steps: OUI Extraction: The first 24 bits of a MAC address, representing the OUI, are extracted. This isolates the unique ...

  9. MAC Address Lookup

    To conduct a MAC Lookup, follow these simple steps: Access the MAC Address Lookup tool. Input the MAC Address (40-A8-F0-4F-50-9E) or OUI (40-A8-F0) into the designated field to check its vendor. Or you can enter the vendor name (Hewlett Packard) to check its MAC address (es) range in detail. The tool scans the MAC Address Vendor Database to ...

  10. MAC ADDRESS AND OUI LOOKUP

    The process of MAC Address and OUI Lookup involves decoding these identifiers, unraveling the origins of networked devices. In this comprehensive exploration, we delve into the significance of MAC addresses, the role of OUI, and how Lookup tools contribute to understanding the diverse array of devices that populate our interconnected world.

  11. IEEE SA

    The Standard Group MAC Address assignment is for Standards Developers, or a Standards Development group, working to develop a new Standard. This assignment is not for companies that require MAC addresses for their products. ... The owner of an already assigned OUI-36 registry product may continue to use the assignment. Currently, the OUI-36 ...

  12. MAC Address Lookup

    In System Preferences, click the View menu and select Network. In the Network window that just opened, click the Wi-Fi, Ethernet, or Airport icon on the left. Now click Advanced on the bottom right. From the upper menu, click Hardware, and look for the MAC Address. Your MAC Address should be in the format: M:M:M:S:S:S.

  13. Find MAC Vendor

    Just input the MAC address or the OUI and you will be shown the name, address, and country of its vendor. In addition, we provide information on the history of MAC prefixes, including any changes to vendor names or addresses. ... An MA-S (MAC Address Block Small) assignment includes an OUI-36 and small blocks of EUI-48 and EUI-64 values which ...

  14. MAC address

    A MAC address (short for medium access control address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth. Within the Open Systems Interconnection ...

  15. MAC Address Lookup Tool [IEEE OUI/Vendor Code]

    This tool looks up the name of the company that manufactured your network device/card by matching the MAC address (OUI) with our database. Enter a MAC address (00:11:22:33:44:55 or 00-11-22-33-44-55) below. OUIs and MAC octets may be separated with either colons, hyphens or space. You can also use this tool to list the OUIs assigned to a ...

  16. MAC Address Lookup

    We have just added additional IEEE registries, including... MA-L: IEEE MAC Address Large (24-bit block size) MA-M: IEEE MAC Address Medium (28-bit block size) MA-S: IEEE MAC Address Small (36-bit block size) OUI24: Organizationally Unique Identifier (24-bit block size) OUI36: Organizationally Unique Identifier (36-bit block size)

  17. IEEE SA

    Check out the infographic to determine the right size MAC address for your business. Apply for an Assignment. Search Public Listing. For More Information. View Infographic. MAC Address Block Large (MA-L) An MA-L assignment includes an OUI and large blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses ...

  18. VMware OUI Allocation

    VMware Organizationally Unique Identifier (OUI) allocation assigns MAC addresses based on the default VMware OUI 00:50:56 and the vCenter Server ID. VMware OUI allocation is the default MAC address assignment model for virtual machines. The allocation works with up to 64 vCenter Server instances, and each vCenter Server can assign up to 64000 ...

  19. MAC Address Vendor Lookup: MAC/OUI/IAB/IEEE Vendor Manufacturer Search

    Download an exhaustive MAC Address Vendor Database for your educational, business or enterprise needs. Our database comes in the following forms: JSON, CSV, XML, Cisco vendorMacs.xml for maximum compatibility and fast integration into existing systems. The API version is also available. By a given MAC address, OUI, IAB, retrieve OUI vendor ...

  20. OUI IEEE LOOKUP

    Organizationally Unique Identifier (OUI): The first 24 bits (the first three octets) of a MAC address constitute the OUI. This portion is assigned by the IEEE and serves as a unique identifier for the organization or manufacturer responsible for the device's network interface.

  21. What are the possible OUIs for the Ethernet MAC address?

    In MAC addresses, the OUI is combined with a 24-bit number (assigned by the owner or 'assignee' of the OUI) to form the address. The first three octets of the address are the OUI. So this is pretty straightforward; the first half of a MAC address is the OUI and the second half is arbitrary. Lo and behold, on the four pis I have here (two B's ...

  22. Ieee Sa

    MAC Address Block Small (MA-S), is a 36-bit identifier that can be used to create various extended identifiers. It is most often used to create IEEE 802-defined MAC addresses (EUI-48 and EUI-64). The MA-S does not include assignment of an OUI.