OUI Lookup
0040fb
CASCADE COMMUNICATIONS
Manufacturer Information
- OUI Prefix
- 0040fb
- Manufacturer
- CASCADE COMMUNICATIONS
- Address
- PRODUCTION QUALITY ENGINEER WESTFORD MA US 01886
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 2
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 0040FB
The OUI prefix 0040FB is assigned to CASCADE COMMUNICATIONS, based in PRODUCTION QUALITY ENGINEER WESTFORD MA US 01886 . 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 CASCADE COMMUNICATIONS.