OUI Lookup
b4cefe
James Czekaj
Manufacturer Information
- OUI Prefix
- b4cefe
- Manufacturer
- James Czekaj
- Address
- 41716 Waterfall Rd Northville MI US 48168
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix B4CEFE
The OUI prefix B4CEFE is assigned to James Czekaj, based in 41716 Waterfall Rd Northville MI US 48168 . 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 James Czekaj.