OUI Lookup
00007b
RESEARCH MACHINES
Manufacturer Information
- OUI Prefix
- 00007b
- Manufacturer
- RESEARCH MACHINES
- Address
- P.O. BOX 75 GB ENGLAND
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 00007B
The OUI prefix 00007B is assigned to RESEARCH MACHINES, based in P.O. BOX 75 GB ENGLAND . 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 RESEARCH MACHINES.