MAC Address Lookup

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

 MAC

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)

Address:

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

Type MA-L

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

Initial registration: 22 April 1998

Last updated: 17 November 2015

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