00:01:21 WatchGuard Technologies, Inc.
Every MAC address from 00:01:21:00:00:00 to 00:01:21:FF:FF:FF belongs to a block the IEEE assigned to WatchGuard Technologies, Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:01:21 belongs to
Written 00:01:21, 00-01-21 or 000121, depending on the system. Look up a full address.
Prefix
00:01:21
Organization
WatchGuard Technologies, Inc.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:01:21:00:00:00
Last address
00:01:21:FF:FF:FF
Address type
Globally unique, unicast
Registered address
605 Fifth Ave. S Seattle WA US 98104-3892
Same organization
Other blocks assigned to WatchGuard Technologies, Inc.
1 more block registered under the same name.