- Prefix
- A4:51:6F A4-51-6F A451.6F
- Block type
- MA-L (16,777,216 addresses)
- Address range
- A4:51:6F:00:00:00 – A4:51:6F:FF:FF:FF
- Organization
- Microsoft Mobile Oy
- Registered address
- Keilalahdentie 4, Espoo 02150, FI
- Country
- Finland (FI)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up A4:51:6F:00:00:00
Microsoft Mobile Oy holds 11 blocks in total: see all. Source: IEEE Registration Authority public listing.