2C:39:C1:00:00:00 to 2C:39:C1:FF:FF:FF
Ciena Corporation
Inspect this prefixRegistered address
7035 Ridge Road
Hanover MD 21076
Block details
- Registry
- MA-L, MAC Address Block Large (OUI)
- Prefix
- 2C:39:C1 /24
- Addresses in block
- 16,777,216
- Decimal range
- 48,626,562,760,704 to 48,626,579,537,919
- 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 2C:39:C1:00:00:00 and 2C:39:C1: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.