OUI Lookup
000f40
Optical Internetworking Forum
Manufacturer Information
- OUI Prefix
- 000f40
- Manufacturer
- Optical Internetworking Forum
- Address
- 48377 Fremont Blvd Fremont CA US 94538
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 000F40
The OUI prefix 000F40 is assigned to Optical Internetworking Forum, based in 48377 Fremont Blvd Fremont CA US 94538 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to Optical Internetworking Forum.