- Prefix
- 00:40:7D 00-40-7D 0040.7D
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:40:7D:00:00:00 – 00:40:7D:FF:FF:FF
- Organization
- EXTENSION TECHNOLOGY CORP.
- Registered address
- 30 HOLLIS STREET, FRAMINGHAM MA 01701, US
- Country
- United States (US)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:40:7D:00:00:00
EXTENSION TECHNOLOGY CORP. holds 1 block in total: see all. Source: IEEE Registration Authority public listing.