Which company owns MAC address prefix BC:38:65?

MAC address prefix BC:38:65 is registered to JWCNETWORKS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:38:65 has a network interface built by JWCNETWORKS.

What is the OUI BC:38:65?

BC:38:65 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to JWCNETWORKS. It covers every address from BC:38:65:00:00:00 to BC:38:65:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-38-65.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in BC:38:65:00:00:00 that is BC:38:65 — 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 JWCNETWORKS located?

JWCNETWORKS is listed at 114, Gasan digital 2-ro, Geumcheon-gu, Seoul KR 08506 in the IEEE OUI registry entry for BC:38:65. This is the address the organization registered with the IEEE, which may differ from its current operating address.

JWCNETWORKS

MAC address prefix BC:38:65 is registered to JWCNETWORKS in the IEEE OUI registry. Any device whose MAC address begins with BC:38:65 has a network interface built by JWCNETWORKS. 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:38:65:00:00:00 to BC:38:65:FF:FF:FF.

OUI prefix: BC:38:65
Hyphen form: BC-38-65
MAC range: BC:38:65:00:00:00 – BC:38:65:FF:FF:FF
Addresses in block: 16,777,216
Organization: JWCNETWORKS
Address: 114, Gasan digital 2-ro, Geumcheon-gu, Seoul KR 08506
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.

2018-12-21Assigned to "JWCNETWORKS"
archived source →
2026-07-17Assigned to "JWCNETWORKS"

Nearby in the registry

The prefixes assigned immediately before and after BC:38:65:

FAQ

Which company owns MAC address prefix BC:38:65?: MAC address prefix BC:38:65 is registered to JWCNETWORKS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:38:65 has a network interface built by JWCNETWORKS.
What is the OUI BC:38:65?: BC:38:65 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to JWCNETWORKS. It covers every address from BC:38:65:00:00:00 to BC:38:65:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-38-65.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in BC:38:65:00:00:00 that is BC:38:65 — 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 JWCNETWORKS located?: JWCNETWORKS is listed at 114, Gasan digital 2-ro, Geumcheon-gu, Seoul KR 08506 in the IEEE OUI registry entry for BC:38:65. This is the address the organization registered with the IEEE, which may differ from its current operating address.