MAC Address Lookup

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


NTT Communications Corporation

MAC prefix: 34:EF:8B

Vendor name: NTT Communications Corporation

MAC range: 34:EF:8B:00:00:00 - 34:EF:8B:FF:FF:FF

Block Size: 16777215 (16.77 M)


NTT Hibiya Bldg. 7F
Chiyoda-ku Tokyo 100-8019

Type MA-L

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

Initial registration: 05 January 2010

Last updated: 17 November 2015

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