Which company owns MAC address prefix 3C:7F:6F?

MAC address prefix 3C:7F:6F is registered to Telechips, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 3C:7F:6F has a network interface built by Telechips, Inc..

What is the OUI 3C:7F:6F?

3C:7F:6F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Telechips, Inc.. It covers every address from 3C:7F:6F:00:00:00 to 3C:7F:6F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 3C-7F-6F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 3C:7F:6F:00:00:00 that is 3C:7F:6F — 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 Telechips, Inc. located?

Telechips, Inc. is listed at 19F~23F,Luther Bldg.42, Olympic-ro 35da-gil, Songpa-gu, Seoul Seoul KR 05510 in the IEEE OUI registry entry for 3C:7F:6F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Telechips, Inc. own?

Telechips, Inc. holds 7 OUI prefixes in the IEEE registry, of which 3C:7F:6F is one. A device made by Telechips, Inc. could carry a MAC address from any of them.

Telechips, Inc.

MAC address prefix 3C:7F:6F is registered to Telechips, Inc. in the IEEE OUI registry. Any device whose MAC address begins with 3C:7F:6F has a network interface built by Telechips, 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 3C:7F:6F:00:00:00 to 3C:7F:6F:FF:FF:FF.

OUI prefix: 3C:7F:6F
Hyphen form: 3C-7F-6F
MAC range: 3C:7F:6F:00:00:00 – 3C:7F:6F:FF:FF:FF
Addresses in block: 16,777,216
Organization: Telechips, Inc.
Address: 19F~23F,Luther Bldg.42, Olympic-ro 35da-gil, Songpa-gu, Seoul Seoul KR 05510
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.

Other prefixes from Telechips, Inc.

Telechips, Inc. holds 7 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (2)

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

2017-09-08Assigned to "Telechips, Inc."
archived source →
2026-07-17Assigned to "Telechips, Inc."

Nearby in the registry

The prefixes assigned immediately before and after 3C:7F:6F:

FAQ

Which company owns MAC address prefix 3C:7F:6F?: MAC address prefix 3C:7F:6F is registered to Telechips, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 3C:7F:6F has a network interface built by Telechips, Inc..
What is the OUI 3C:7F:6F?: 3C:7F:6F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Telechips, Inc.. It covers every address from 3C:7F:6F:00:00:00 to 3C:7F:6F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 3C-7F-6F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 3C:7F:6F:00:00:00 that is 3C:7F:6F — 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 Telechips, Inc. located?: Telechips, Inc. is listed at 19F~23F,Luther Bldg.42, Olympic-ro 35da-gil, Songpa-gu, Seoul Seoul KR 05510 in the IEEE OUI registry entry for 3C:7F:6F. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Telechips, Inc. own?: Telechips, Inc. holds 7 OUI prefixes in the IEEE registry, of which 3C:7F:6F is one. A device made by Telechips, Inc. could carry a MAC address from any of them.