MAC Address Lookup

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

Hamamatsu Photonics K.K.

Unique prefixes: 3

Block Size: 33558525 (33.55 M)

First registration: 22 April 1998

Last updated: 13 February 2023

Types

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

MA-S: Mac Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of address 2^12 (4096)