Which company owns MAC address prefix BC:4B:79?

MAC address prefix BC:4B:79 is registered to SensingTek in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:4B:79 has a network interface built by SensingTek.

What is the OUI BC:4B:79?

BC:4B:79 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SensingTek. It covers every address from BC:4B:79:00:00:00 to BC:4B:79:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-4B-79.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in BC:4B:79:00:00:00 that is BC:4B:79 — 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 SensingTek located?

SensingTek is listed at 2F, No.6-2,Dusing Rd.,Hsinchu Science Park, Hsinchu TW 30078 in the IEEE OUI registry entry for BC:4B:79. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SensingTek

MAC address prefix BC:4B:79 is registered to SensingTek in the IEEE OUI registry. Any device whose MAC address begins with BC:4B:79 has a network interface built by SensingTek. 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 BC:4B:79:00:00:00 to BC:4B:79:FF:FF:FF.

OUI prefix: BC:4B:79
Hyphen form: BC-4B-79
MAC range: BC:4B:79:00:00:00 – BC:4B:79:FF:FF:FF
Addresses in block: 16,777,216
Organization: SensingTek
Address: 2F, No.6-2,Dusing Rd.,Hsinchu Science Park, Hsinchu TW 30078
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 "SensingTek"
archived source →
2026-07-17Assigned to "SensingTek"

Nearby in the registry

The prefixes assigned immediately before and after BC:4B:79:

FAQ

Which company owns MAC address prefix BC:4B:79?: MAC address prefix BC:4B:79 is registered to SensingTek in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:4B:79 has a network interface built by SensingTek.
What is the OUI BC:4B:79?: BC:4B:79 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SensingTek. It covers every address from BC:4B:79:00:00:00 to BC:4B:79:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-4B-79.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in BC:4B:79:00:00:00 that is BC:4B:79 — 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 SensingTek located?: SensingTek is listed at 2F, No.6-2,Dusing Rd.,Hsinchu Science Park, Hsinchu TW 30078 in the IEEE OUI registry entry for BC:4B:79. This is the address the organization registered with the IEEE, which may differ from its current operating address.