- Prefix
- A4:B1:21 A4-B1-21 A4B1.21
- Block type
- MA-L (16,777,216 addresses)
- Address range
- A4:B1:21:00:00:00 – A4:B1:21:FF:FF:FF
- Organization
- Arantia 2010 S.L.
- Registered address
- Volta do Castro s/n, Santiago de Compostela A Coruña 15706, ES
- Country
- Spain (ES)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up A4:B1:21:00:00:00
Arantia 2010 S.L. holds 1 block in total: see all. Source: IEEE Registration Authority public listing.