00:20:5E CASTLE ROCK, INC.
Every MAC address from 00:20:5E:00:00:00 to 00:20:5E:FF:FF:FF belongs to a block the IEEE assigned to CASTLE ROCK, INC.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:20:5E belongs to
Written 00:20:5E, 00-20-5E or 00205E, depending on the system. Look up a full address.
Prefix
00:20:5E
Organization
CASTLE ROCK, INC.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:20:5E:00:00:00
Last address
00:20:5E:FF:FF:FF
Address type
Globally unique, unicast
Registered address
20 SOUTH SANTA CRUZ AVE. LOS GATOS CA US 95030