EC:2C:49:00:00:00 to EC:2C:49:FF:FF:FF
NakaoLab, The University of Tokyo
Registered address
Engineering Building 3, Room 445, 7-3-1 Hongo
Tokyo Bunkyoku 113-0033
Block details
- Registry
- MA-L, MAC Address Block Large (OUI)
- Prefix
- EC:2C:49 /24
- Addresses in block
- 16,777,216
- Decimal range
- 259,674,947,452,928 to 259,674,964,230,143
- Address type
- Unicast, universally administered
What this block covers
The classic 24 bit OUI. The registrant owns the first three octets and can assign every one of the remaining 16.7 million addresses.
Any MAC address between EC:2C:49:00:00:00 and EC:2C:49:FF:FF:FF belongs to this assignment. The registrant chooses the remaining 24 bits, so the same prefix can appear on very different products from the same company.
Look up another MAC address
Any format works: colons, dashes, dots, or bare hex.