What is a 36-bit Organizationally Unique Identifier (OUI-36)? | FAQ | MAC Address Vendor Lookup
Frequently asked questions

What is a 36-bit Organizationally Unique Identifier (OUI-36)?

The OUI-36 is a registry activity name, which was replaced by the MA-S registry product name as of January 1, 2014. It includes both a unique 36-bit number used in some standards and the assignment of a block of EUI-48 and EUI-64 identifiers by the IEEE Registration Authority. The owner of a previously assigned OUI-36 registry product may continue to use the assignment.

What is a 36-bit Organizationally Unique Identifier (OUI-36)?

Currently, the OUI-36 only refers to a 36-bit unique number used in some standards. The OUI-36 of the MA-S assignment may be appended with 12 organization-supplied bits to form an EUI-48, or with 28 organization-supplied bits to form an EUI-64 (the identifier blocks assigned with an MA-S). Applications using an MA-S should make no assumptions about the bit pattern present in the (24-bit most-significant) OUI portion of the assigned OUI-36.

Trusted by the following companies

Flex.com webafrica.co.za wework.com guarddog.ai cybercns.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.

Order database
The data was just refreshed