Which company owns MAC address prefix BC:77:9F?

MAC address prefix BC:77:9F is registered to SBM Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:77:9F has a network interface built by SBM Co., Ltd..

What is the OUI BC:77:9F?

BC:77:9F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SBM Co., Ltd.. It covers every address from BC:77:9F:00:00:00 to BC:77:9F:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-77-9F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in BC:77:9F:00:00:00 that is BC:77:9F — 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 SBM Co., Ltd. located?

SBM Co., Ltd. is listed at Hyunwoo Bldg 206, Anyang7-Dong Anyang Gyeonggi-Do KR 430-817 in the IEEE OUI registry entry for BC:77:9F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SBM Co., Ltd.

MAC address prefix BC:77:9F is registered to SBM Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with BC:77:9F has a network interface built by SBM Co., Ltd.. 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:77:9F:00:00:00 to BC:77:9F:FF:FF:FF.

OUI prefix: BC:77:9F
Hyphen form: BC-77-9F
MAC range: BC:77:9F:00:00:00 – BC:77:9F:FF:FF:FF
Addresses in block: 16,777,216
Organization: SBM Co., Ltd.
Address: Hyunwoo Bldg 206, Anyang7-Dong Anyang Gyeonggi-Do KR 430-817
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 "SBM Co., Ltd."
archived source →
2026-07-17Assigned to "SBM Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after BC:77:9F:

FAQ

Which company owns MAC address prefix BC:77:9F?: MAC address prefix BC:77:9F is registered to SBM Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:77:9F has a network interface built by SBM Co., Ltd..
What is the OUI BC:77:9F?: BC:77:9F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SBM Co., Ltd.. It covers every address from BC:77:9F:00:00:00 to BC:77:9F:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-77-9F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in BC:77:9F:00:00:00 that is BC:77:9F — 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 SBM Co., Ltd. located?: SBM Co., Ltd. is listed at Hyunwoo Bldg 206, Anyang7-Dong Anyang Gyeonggi-Do KR 430-817 in the IEEE OUI registry entry for BC:77:9F. This is the address the organization registered with the IEEE, which may differ from its current operating address.