OUI Lookup
5cf838
IEEE Registration Authority
Manufacturer Information
- OUI Prefix
- 5cf838
- Manufacturer
- IEEE Registration Authority
- Address
- 445 Hoes Lane Piscataway NJ US 08554
- Last updated
- 6/11/2026
Vendor Statistics
- Total prefixes
- 424
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 5CF838
The OUI prefix 5CF838 is assigned to IEEE Registration Authority, based in 445 Hoes Lane Piscataway NJ US 08554 . 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 IEEE Registration Authority.
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