OUI Lookup
909f33
EFM Networks
Manufacturer Information
- OUI Prefix
- 909f33
- Manufacturer
- EFM Networks
- Address
- 6F, Benposra II 1197-1 Bojeong Giheung Gu Yong In Kyunggi do KR 446913
- Last updated
- 6/10/2026
Vendor Statistics
- Total prefixes
- 8
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 909F33
The OUI prefix 909F33 is assigned to EFM Networks, based in 6F, Benposra II 1197-1 Bojeong Giheung Gu Yong In Kyunggi do KR 446913 . 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 EFM Networks.