MAC Address Lookup

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


Caterpillar, Inc

Unique prefixes: 2

Block Size: 33554430 (33.55 M)

First registration: 14 October 2002

Last updated: 13 January 2019


CID: Company Identifier. This prefix will not be used for globally unique applications. Number of address 2^24 (~16 Million)

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

MAC PrefixTypeRegistration Date