00:21:3B Berkshire Products, Inc
Every MAC address from 00:21:3B:00:00:00 to 00:21:3B:FF:FF:FF belongs to a block the IEEE assigned to Berkshire Products, Inc. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:21:3B belongs to
Written 00:21:3B, 00-21-3B or 00213B, depending on the system. Look up a full address.
Prefix
00:21:3B
Organization
Berkshire Products, Inc
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:21:3B:00:00:00
Last address
00:21:3B:FF:FF:FF
Address type
Globally unique, unicast
Registered address
PO Box 2819 Cumming GA US 30028