- Prefix
- A4:21:8A A4-21-8A A421.8A
- Block type
- MA-L (16,777,216 addresses)
- Address range
- A4:21:8A:00:00:00 – A4:21:8A:FF:FF:FF
- Organization
- Nortel Networks
- Registered address
- CARRETERA BASE AEREA # 5850, Zapopan Jalisco 44130, MX
- Country
- Mexico (MX)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up A4:21:8A:00:00:00
Nortel Networks holds 68 blocks in total: see all. Source: IEEE Registration Authority public listing.