- Prefix
- 18:EF:63 18-EF-63 18EF.63
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 18:EF:63:00:00:00 – 18:EF:63:FF:FF:FF
- Organization
- Cisco Systems, Inc
- Registered address
- 80 West Tasman Drive, San Jose CA 94568, US
- Country
- United States (US)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 18:EF:63:00:00:00
Cisco Systems, Inc holds 1112 blocks in total: see all. Source: IEEE Registration Authority public listing.