- Prefix
- C4:E1:7C C4-E1-7C C4E1.7C
- Block type
- MA-L (16,777,216 addresses)
- Address range
- C4:E1:7C:00:00:00 – C4:E1:7C:FF:FF:FF
- Organization
- U2S co.
- Registered address
- 104-706, SK Ventium Building, 522, Dangjeong-Dong, Gunpo-si Geonggi-do 435-776, KR
- Country
- South Korea (KR)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up C4:E1:7C:00:00:00
U2S co. holds 1 block in total: see all. Source: IEEE Registration Authority public listing.