Which company owns MAC address prefix C4:45:67?

MAC address prefix C4:45:67 is registered to SAMBON PRECISON and ELECTRONICS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:45:67 has a network interface built by SAMBON PRECISON and ELECTRONICS.

What is the OUI C4:45:67?

C4:45:67 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SAMBON PRECISON and ELECTRONICS. It covers every address from C4:45:67:00:00:00 to C4:45:67:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-45-67.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C4:45:67:00:00:00 that is C4:45:67 — 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 SAMBON PRECISON and ELECTRONICS located?

SAMBON PRECISON and ELECTRONICS is listed at 204, Samjeong-dong, Ojeong-gu Bucheon-city Kyeonggi-do KR 421-810 in the IEEE OUI registry entry for C4:45:67. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SAMBON PRECISON and ELECTRONICS

MAC address prefix C4:45:67 is registered to SAMBON PRECISON and ELECTRONICS in the IEEE OUI registry. Any device whose MAC address begins with C4:45:67 has a network interface built by SAMBON PRECISON and ELECTRONICS. 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 C4:45:67:00:00:00 to C4:45:67:FF:FF:FF.

OUI prefix: C4:45:67
Hyphen form: C4-45-67
MAC range: C4:45:67:00:00:00 – C4:45:67:FF:FF:FF
Addresses in block: 16,777,216
Organization: SAMBON PRECISON and ELECTRONICS
Address: 204, Samjeong-dong, Ojeong-gu Bucheon-city Kyeonggi-do KR 421-810
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 "SAMBON PRECISON and ELECTRONICS"
archived source →
2026-07-17Assigned to "SAMBON PRECISON and ELECTRONICS"

Nearby in the registry

The prefixes assigned immediately before and after C4:45:67:

FAQ

Which company owns MAC address prefix C4:45:67?: MAC address prefix C4:45:67 is registered to SAMBON PRECISON and ELECTRONICS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:45:67 has a network interface built by SAMBON PRECISON and ELECTRONICS.
What is the OUI C4:45:67?: C4:45:67 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SAMBON PRECISON and ELECTRONICS. It covers every address from C4:45:67:00:00:00 to C4:45:67:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-45-67.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C4:45:67:00:00:00 that is C4:45:67 — 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 SAMBON PRECISON and ELECTRONICS located?: SAMBON PRECISON and ELECTRONICS is listed at 204, Samjeong-dong, Ojeong-gu Bucheon-city Kyeonggi-do KR 421-810 in the IEEE OUI registry entry for C4:45:67. This is the address the organization registered with the IEEE, which may differ from its current operating address.