- Prefix
- B4:51:F9 B4-51-F9 B451.F9
- Block type
- MA-L (16,777,216 addresses)
- Address range
- B4:51:F9:00:00:00 – B4:51:F9:FF:FF:FF
- Organization
- NB Software
- Registered address
- Eichhalde 3, Weissach i. T. Baden-Württemberg 71554, DE
- Country
- Germany (DE)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up B4:51:F9:00:00:00
NB Software holds 1 block in total: see all. Source: IEEE Registration Authority public listing.