OUI Lookup
001b7f
TMN Technologies Telecomunicacoes Ltda
Manufacturer Information
- OUI Prefix
- 001b7f
- Manufacturer
- TMN Technologies Telecomunicacoes Ltda
- Address
- Rua Nilza, 422 São Paulo SP BR 03651-120
- Last updated
- 6/11/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 001B7F
The OUI prefix 001B7F is assigned to TMN Technologies Telecomunicacoes Ltda, based in Rua Nilza, 422 São Paulo SP BR 03651-120 . 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 TMN Technologies Telecomunicacoes Ltda.