Registration Authority

Please note that the annual 3% price increase will go into effect for all registries on 29 December 2023 at 1:00 pm ET.

About the Registration Authority

IEEE offers Registration Authority programs or registries which maintain lists of unique identifiers under standards and issue unique identifiers to those wishing to register them. The IEEE Registration Authority assigns unambiguous names to objects in a way which makes the assignment available to interested parties.

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Infographic. Finding the right MAC Address for your business. Wired in or wireless, to connect to the Internet of Things (IoT), all things must have a home address. Learn More.

Public Listing

Download Public Listing

In order to download the entire public listing for a registry, please select either the text or CSV file below.

Note: the CSV files below use the UTF-8 character set. Please open the files in an application that supports UTF-8.

Registries

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 About MA-L

MAC Address Block Medium (MA-M)

An MA-M 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.

Learn More About MA-M

MAC Address Block Small (MA-S)

An MA-S 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.

Learn More About MA-S

Company ID (CID)

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

Learn More About CID

EtherType™

Provides a context for interpretation of the data field of an Ethernet/IEEE 802.3 data frame (protocol identification).

Learn More About EtherType™

Manufacturer ID

The manufacturer of a transducer is defined with a 14-bit code called the manufacturer ID.

Learn More About Manufacturer ID

Logical Link Control (LLC)

Contains addressing information that consists of the Destination Service Access Point (DSAP) and the Source Service Access Point (SSAP) address field.

Learn More About LLC

AcpcTreeId

An identifier for a specific set of binary trees used to convey certificate access codes to certificate users who are using the Activation Codes for Pseudonym Certificates (ACPC) technique specified in IEEE Std 1609.2.1. The assignee of an AcpcTreeId is assigned to operate an ACPC Certificate Access Manager using that AcpcTreeId.

Learn More About AcpcTreeId

Unique Registration Number (URN)

A 64-bit unique identifier contained in memory devices, or nodes, in which IEEE 1451.4 TEDS data is stored.

Learn More About URN

IEEE Template/TDL Item

IEEE template is a definition of the placement and significance of each piece of data stored within the TEDS memory. A TDL’s purpose is to map bits.

Learn More About IEEE Template/TDL Item

Provider Service Identifier (PSID)

Used by IEEE 1609 standards to identify a particular application service provider that announces it is providing a service to potential users of an application or service.

Learn More About PSID

IEEE 802.16 Operator ID

A 24-bit number that is broadcast by a base station as part of its Base Station ID.

Learn More About IEEE 802.16 Operator ID

Standard Group MAC Address

NOTE: For Standards Development use ONLY. A Universally Administered Address Block allocated for the assignment of Group MAC Addresses for use in Standards.

Learn More About Standard Group MAC Address

IEEE 1667 Silo Type Identifier (STID)

IEEE 1667 specifies the interface to and behavior of several silos (e.g., Probe Silo, TCG Storage Transport Silo, Password Silo, and Smart Card Transport Silo). External silos may be defined outside of the standard, be either public or private, and involve third-party licensing. Guidelines for external silos are specified in IEEE 1667.

Learn More About STID

IEEE Std 1588™ sdoId

The sdoId (Standards Development Organization Identifier) is a protocol attribute, per IEEE Std 1588, that identifies the PTP Profile in use by the PTP Instance.

Learn More About IEEE Std 1588™ sdoId

CtlSeriesId

An identifier for a Certificate Trust List series allowing for the management of roots of trust within the certificate management system as specified in IEEE Std 1609.2.1. The assignee of an CtlSeriesId serves as the SCMS Manager of that CtlSeriesId.

Learn More About CtlSeriesId

Registration Authority Governance and Additional Information

The IEEE Registration Authority operates under the direction of the IEEE SA Board of Governors.

Registration Authority Committee (RAC)

Oversight committee that assists standard developing organizations to establish unambiguous, sustainable registration authorities.

Learn More About the Registration Authority Committee (RAC)

Tutorials

Informative documents to assist with learning more about IEEE Standard Association Registries.

Learn More About Tutorials

Credit Application Form

For those interested in paying for a registry via purchase order.

Learn More About Credit Application Form

FAQs

The commonly most asked questions about our registries and how they are used.

View Frequently Asked Questions

Contact Us

Contact Registration Authority staff via [email protected], snail mail, phone or fax.

View Contact Information

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