What devices use 78E9CF?

Any network device with a MAC address starting 78:E9:CF was manufactured by or for TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO.

MA-L · OUI prefix

TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO

Q: Who owns MAC prefix 78E9CF?

78E9CF is registered to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO in the IEEE MA-L registry.

Any MAC address starting 78:E9:CF is registered to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO in BR.

OUI prefix	78E9CF
Vendor	TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO
Registry	MA-L (24-bit, large block)
Country	BR
Example MAC	78:E9:CF:00:00:00

What this means

The IEEE assigned the MA-L block 78E9CF to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO. 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 78:E9:CF, it is TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO hardware.

Other TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO prefixes

TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO holds 9 registered blocks in total.

104121 107223 44896D 542F8A 68D40C 94EAEA B81E61 F45420

Look up another MAC