OUI Lookup
c81b5c
BCTech
Manufacturer Information
- OUI Prefix
- c81b5c
- Manufacturer
- BCTech
- Address
- 14 Building, Tiandeng road 259# shanghai xuhui district, shanghai CN 200237
- Last updated
- 6/20/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix C81B5C
The OUI prefix C81B5C is assigned to BCTech, based in 14 Building, Tiandeng road 259# shanghai xuhui district, shanghai CN 200237 . 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 BCTech.