MAC Address Lookup

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

 MAC

OUI prefix: 00:20:5E

Vendor name: CASTLE ROCK, INC.

Address:

20 SOUTH SANTA CRUZ AVE.
LOS GATOS CA 95030
US.

Assignment Type MA-L

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

Last updated: 17 November 2015

Initial registration: 22 April 1998

MAC Address Vendor Country US map