MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
CASTLE ROCK, INC.
MAC prefix: 00:20:5E
Vendor name: CASTLE ROCK, INC.
MAC range: 00:20:5E:00:00:00 - 00:20:5E:FF:FF:FF
Block Size: 16777215 (16.77 M)
20 SOUTH SANTA CRUZ AVE.
LOS GATOS CA 95030
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Initial registration: 22 April 1998
Last updated: 17 November 2015