Extreme Networks, Inc. - MAC Prefix C851FB (MA-L)

What this means

The IEEE assigned the MA-L block C851FB to Extreme Networks, Inc.. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting C8:51:FB, it is Extreme Networks, Inc. hardware.

Frequently Asked Questions

Who owns MAC prefix C851FB?

C851FB is registered to Extreme Networks, Inc. in the IEEE MA-L registry.

What does the MA-L registry type mean?

An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Extreme Networks, Inc.'s block covers 16,777,216 addresses.

What devices use C851FB?

Any network device with a MAC address starting C8:51:FB was manufactured by or for Extreme Networks, Inc..

Other Extreme Networks, Inc. prefixes

Extreme Networks, Inc. holds 100 registered blocks in total.

OUI prefix	C851FB
Vendor	Extreme Networks, Inc.
Registry	MA-L (24-bit, large block)
Block size	16,777,216 addresses
Country	US
Other blocks by this vendor	100 total
Example MAC	C8:51:FB:00:00:00