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)