MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
Riken Keiki Co., Ltd.
MAC address prefix 00:21:BB is registered to Riken Keiki Co., Ltd., located at 2-7-6 AzusawaItabashi-Ku Tokyo 174-8744JP.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was initially registered on 25 October 2008, with the most recent update made on 17 November 2015.
OUI: 00:21:BB
Vendor name: Riken Keiki Co., Ltd.
Address:
Assignment Type MA-L 2-7-6 Azusawa
Itabashi-Ku Tokyo 174-8744
JP.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Last updated: 17 November 2015
Initial registration: 25 October 2008
