MAC Address Lookup

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


Extreme Networks, Inc.

MAC prefix: B4:C7:99

Vendor name: Extreme Networks, Inc.

MAC range: B4:C7:99:00:00:00 - B4:C7:99:FF:FF:FF

Block Size: 16777215 (16.77 M)


475 Half Day Road
Lincolnshire IL 60069

Type MA-L

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

Initial registration: 07 May 2011

Last updated: 22 September 2017

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