MAC Address Lookup

Find the vendor name of a device by entering an OUI or a MAC address


Extreme Networks, Inc.

MAC prefix: 9C:5D:12

Vendor name: Extreme Networks, Inc.

MAC range: 9C:5D:12:00:00:00 - 9C:5D:12:FF:FF:FF

Block Size: 16777215 (16.77 M)


1011 McCarthy Blvd
Milpitas CA 95035

Type MA-L

Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

Initial registration: 14 June 2012

Last updated: 31 January 2020

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