00:21:BF Hitachi High-Tech Control Systems Corporation
Every MAC address from 00:21:BF:00:00:00 to 00:21:BF:FF:FF:FF belongs to a block the IEEE assigned to Hitachi High-Tech Control Systems Corporation. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:21:BF belongs to
Written 00:21:BF, 00-21-BF or 0021BF, depending on the system. Look up a full address.
Prefix
00:21:BF
Organization
Hitachi High-Tech Control Systems Corporation
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:21:BF:00:00:00
Last address
00:21:BF:FF:FF:FF
Address type
Globally unique, unicast
Registered address
500,Miyu-cho Mito-shi Ibaraki-ken JP 319-0316