- Prefix
- 00:21:72 00-21-72 0021.72
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:21:72:00:00:00 – 00:21:72:FF:FF:FF
- Organization
- Seoultek Valley
- Registered address
- Bang-i Dong 51-5, Songpa, Seoul 138-050, KR
- Country
- South Korea (KR)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:21:72:00:00:00
Seoultek Valley holds 1 block in total: see all. Source: IEEE Registration Authority public listing.