- Prefix
- 00:40:74 00-40-74 0040.74
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:40:74:00:00:00 – 00:40:74:FF:FF:FF
- Organization
- CABLE AND WIRELESS
- Registered address
- COMMUNICATIONS, INC., VIENNA VA 22182-3964, US
- Country
- United States (US)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:40:74:00:00:00
CABLE AND WIRELESS holds 1 block in total: see all. Source: IEEE Registration Authority public listing.