Which company owns MAC address prefix 0C:1D:C2?

MAC address prefix 0C:1D:C2 is registered to SeAH Networks in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 0C:1D:C2 has a network interface built by SeAH Networks.

What is the OUI 0C:1D:C2?

0C:1D:C2 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SeAH Networks. It covers every address from 0C:1D:C2:00:00:00 to 0C:1D:C2:FF:FF:FF, or 16,777,216 addresses in total. It is also written 0C-1D-C2.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 0C:1D:C2:00:00:00 that is 0C:1D:C2 — 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 SeAH Networks located?

SeAH Networks is listed at 9F, IT Venture Tower East Wing 78 Garak-Dong, Seoul Songpa-gu KR 138-950 in the IEEE OUI registry entry for 0C:1D:C2. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SeAH Networks

MAC address prefix 0C:1D:C2 is registered to SeAH Networks in the IEEE OUI registry. Any device whose MAC address begins with 0C:1D:C2 has a network interface built by SeAH Networks. 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 0C:1D:C2:00:00:00 to 0C:1D:C2:FF:FF:FF.

OUI prefix: 0C:1D:C2
Hyphen form: 0C-1D-C2
MAC range: 0C:1D:C2:00:00:00 – 0C:1D:C2:FF:FF:FF
Addresses in block: 16,777,216
Organization: SeAH Networks
Address: 9F, IT Venture Tower East Wing 78 Garak-Dong, Seoul Songpa-gu KR 138-950
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 "SeAH Networks"
archived source →
2026-07-17Assigned to "SeAH Networks"

Nearby in the registry

The prefixes assigned immediately before and after 0C:1D:C2:

FAQ

Which company owns MAC address prefix 0C:1D:C2?: MAC address prefix 0C:1D:C2 is registered to SeAH Networks in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 0C:1D:C2 has a network interface built by SeAH Networks.
What is the OUI 0C:1D:C2?: 0C:1D:C2 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SeAH Networks. It covers every address from 0C:1D:C2:00:00:00 to 0C:1D:C2:FF:FF:FF, or 16,777,216 addresses in total. It is also written 0C-1D-C2.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 0C:1D:C2:00:00:00 that is 0C:1D:C2 — 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 SeAH Networks located?: SeAH Networks is listed at 9F, IT Venture Tower East Wing 78 Garak-Dong, Seoul Songpa-gu KR 138-950 in the IEEE OUI registry entry for 0C:1D:C2. This is the address the organization registered with the IEEE, which may differ from its current operating address.