00:1F:51 HD Communications Corp
Every MAC address from 00:1F:51:00:00:00 to 00:1F:51:FF:FF:FF belongs to a block the IEEE assigned to HD Communications Corp. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:1F:51 belongs to
Written 00:1F:51, 00-1F-51 or 001F51, depending on the system. Look up a full address.
Prefix
00:1F:51
Organization
HD Communications Corp
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:1F:51:00:00:00
Last address
00:1F:51:FF:FF:FF
Address type
Globally unique, unicast
Registered address
2180 Fifth Ave Ronkonkoma NY US 11779