MAC Address Lookup

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


West Pharmaceutical Services, Inc.

Unique prefixes: 1

Block Size: 4095 (4.09 k)

First registration: 28 October 2021


MA-S: Mac Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of address 2^12 (4096)

MAC PrefixTypeRegistration Date