MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
Grandstream Networks, Inc.
Unique prefixes: 3
Block Size: 50331645 (50.33 M)
First registration: 14 October 2002
Last updated: 27 April 2022
MA-L: Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)