Which company owns MAC address prefix 34:A3:BF?

MAC address prefix 34:A3:BF is registered to Terewave. Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:A3:BF has a network interface built by Terewave. Inc..

What is the OUI 34:A3:BF?

34:A3:BF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Terewave. Inc.. It covers every address from 34:A3:BF:00:00:00 to 34:A3:BF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-A3-BF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 34:A3:BF:00:00:00 that is 34:A3:BF — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.

Where is Terewave. Inc. located?

Terewave. Inc. is listed at Room 217, Ssangyong Research Center Yuseong-gu Daejeon-city KR 305804 in the IEEE OUI registry entry for 34:A3:BF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Terewave. Inc.

MAC address prefix 34:A3:BF is registered to Terewave. Inc. in the IEEE OUI registry. Any device whose MAC address begins with 34:A3:BF has a network interface built by Terewave. Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from 34:A3:BF:00:00:00 to 34:A3:BF:FF:FF:FF.

OUI prefix: 34:A3:BF
Hyphen form: 34-A3-BF
MAC range: 34:A3:BF:00:00:00 – 34:A3:BF:FF:FF:FF
Addresses in block: 16,777,216
Organization: Terewave. Inc.
Address: Room 217, Ssangyong Research Center Yuseong-gu Daejeon-city KR 305804
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 (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2016-07-29Assigned to "Terewave. Inc."
archived source →
2026-07-17Assigned to "Terewave. Inc."

Nearby in the registry

The prefixes assigned immediately before and after 34:A3:BF:

FAQ

Which company owns MAC address prefix 34:A3:BF?: MAC address prefix 34:A3:BF is registered to Terewave. Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:A3:BF has a network interface built by Terewave. Inc..
What is the OUI 34:A3:BF?: 34:A3:BF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Terewave. Inc.. It covers every address from 34:A3:BF:00:00:00 to 34:A3:BF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-A3-BF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 34:A3:BF:00:00:00 that is 34:A3:BF — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
Where is Terewave. Inc. located?: Terewave. Inc. is listed at Room 217, Ssangyong Research Center Yuseong-gu Daejeon-city KR 305804 in the IEEE OUI registry entry for 34:A3:BF. This is the address the organization registered with the IEEE, which may differ from its current operating address.