Search for manufacturer by MAC address

Just input the MAC address or the OUI and you will be shown the name, address, and country of its vendor.

In addition, we provide information on the history of MAC prefixes, including any changes to vendor names or addresses.

DB Entries

Last update: 4 March 2024
MAC address: 51075
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MA-L 35191
MA-M 5199
MA-S 5891
CID 181
IAB 4578

MA-L

An MA-L (MAC Address Block Large) assignment includes an OUI and large blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.

MA-M

An MA-M (MAC Address Block Medium) assignment includes medium blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.

MA-S

An MA-S (MAC Address Block Small) assignment includes an OUI-36 and small blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.

CID

A unique 24-bit identifier that cannot be used to generate EUI-48 or EUI-64 values. Therefore, the CID (Company ID) is especially applicable in applications where unique MAC addresses are not required.

IAB

IAB, Individual Address Block, is an inactive registry activity, which has been replaced by the MA-S registry product as of January 1,2014. The owner of an already assigned IAB may continue to use the assignment until its exhaustion.