MAC Address Lookup

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

AT&T

Unique prefixes: 6

Block Size: 84934650 (84.93 M)

First registration: 22 April 1998

Last updated: 16 December 2022

Types

MA-L: Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

MA-M: Mac Address Block Medium. Number of address 2^20 (~1 Million)