MAC Address Lookup

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


Berkshire Products, Inc

MAC prefix: 00:21:3B

Vendor name: Berkshire Products, Inc

MAC range: 00:21:3B:00:00:00 - 00:21:3B:FF:FF:FF

Block Size: 16777215 (16.77 M)


PO Box 2819
Cumming GA 30028

Type MA-L

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

Initial registration: 25 October 2008

Last updated: 17 November 2015

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