MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
AT
IEEE Registrant 6 Prefixes
AT&T
AT&T, accessible at www.att.com, manages 6 unique MAC address prefixes. These prefixes have a total block size of 84.9 million addresses.
The allocation includes the following types: MA-L(MAC Address Block Large, 16,777,216 addresses each) and MA-M(MAC Address Block Medium, 1,048,576 addresses each).
The company registered its MAC address allocation on 22 April 1998, and the most recent update was made on 16 December 2022. These allocations support network identification and communication globally.
Unique prefixes 6
Block Size 84934650 (84.93 M)
First registration 22 April 1998
Last updated 16 December 2022
Entity Details
Unique prefixes 6
Block Size 84934650 (84.93 M)
Website www.att.com
First registration 22 April 1998
Last updated 16 December 2022
Types
MA-L: Block Type
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)MA-M: Block Type
Mac Address Block Medium. Number of address 2^20 (~1 Million)