- Prefix
- 00:01:81 00-01-81 0001.81
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:01:81:00:00:00 – 00:01:81:FF:FF:FF
- Organization
- Nortel Networks
- Registered address
- 1100 Technology Park Drive, Billerica MA 01821, US
- Country
- United States (US)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:01:81:00:00:00
Nortel Networks holds 68 blocks in total: see all. Source: IEEE Registration Authority public listing.