00:21:DF Martin Christ GmbH
Every MAC address from 00:21:DF:00:00:00 to 00:21:DF:FF:FF:FF belongs to a block the IEEE assigned to Martin Christ GmbH. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:21:DF belongs to
Written 00:21:DF, 00-21-DF or 0021DF, depending on the system. Look up a full address.
Prefix
00:21:DF
Organization
Martin Christ GmbH
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:21:DF:00:00:00
Last address
00:21:DF:FF:FF:FF
Address type
Globally unique, unicast
Registered address
An der Unteren Soese 50 Osterode Niedersachsen DE 37520