5C:64:F1:00:00:00 to 5C:64:F1:FF:FF:FF
Cisco Systems, Inc
Inspect this prefixRegistered address
80 West Tasman Drive
San Jose CA 94568
Block details
- Registry
- MA-L, MAC Address Block Large (OUI)
- Prefix
- 5C:64:F1 /24
- Addresses in block
- 16,777,216
- Decimal range
- 101,588,609,794,048 to 101,588,626,571,263
- 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 5C:64:F1:00:00:00 and 5C:64:F1: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.