- Prefix
- 00:40:39 00-40-39 0040.39
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:40:39:00:00:00 – 00:40:39:FF:FF:FF
- Organization
- OPTEC DAIICHI DENKO CO., LTD.
- Registered address
- FIBER OPTICS & TELECOM. DIV., JAPAN
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:40:39:00:00:00
OPTEC DAIICHI DENKO CO., LTD. holds 1 block in total: see all. Source: IEEE Registration Authority public listing.