- Prefix
- 00:21:E1 00-21-E1 0021.E1
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:21:E1:00:00:00 – 00:21:E1:FF:FF:FF
- Organization
- Nortel Networks
- Registered address
- 2221 Lakeside Blvd, Richardson TX 75081, US
- Country
- United States (US)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:21:E1:00:00:00
Nortel Networks holds 68 blocks in total: see all. Source: IEEE Registration Authority public listing.