MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
NTT DOCOMO BUSINESS, Inc.
MAC address prefix 34:EF:8B is registered to NTT DOCOMO BUSINESS, Inc., located at NTT Hibiya Bldg. 7FChiyoda-ku Tokyo 100-8019JP.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was initially registered on 05 January 2010, with the most recent update made on 18 September 2025.
OUI: 34:EF:8B
Vendor name: NTT DOCOMO BUSINESS, Inc.
Address:
Assignment Type MA-L NTT Hibiya Bldg. 7F
Chiyoda-ku Tokyo 100-8019
JP.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Last updated: 18 September 2025
Initial registration: 05 January 2010
