NTT DOCOMO BUSINESS, Inc.
Any device whose MAC address begins with 34:EF:8B has a network interface built by NTT DOCOMO BUSINESS, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.
- OUI prefix
- 34:EF:8B
- Organization
- NTT DOCOMO BUSINESS, Inc.
- Address
- NTT DOCOMO BUSINESS Karagasaki Bldg. 1-11-7 Chuo-cho Meguro-ku Tokyo JP 152-0001
- Source
- IEEE OUI registry
Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.
Assignment history (1)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2026-07-17Assigned to "NTT DOCOMO BUSINESS, Inc."