MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
Atsumi Electric Co.,LTD.
OUI prefix: 00:11:4D
Vendor name: Atsumi Electric Co.,LTD.
Hamamatsu Shizuoka 431-2103
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Last updated: 17 November 2015
Initial registration: 05 June 2004