Which company owns MAC address prefix B8:C2:27?

MAC address prefix B8:C2:27 is registered to PSTec in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:C2:27 has a network interface built by PSTec.

What is the OUI B8:C2:27?

B8:C2:27 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to PSTec. It covers every address from B8:C2:27:00:00:00 to B8:C2:27:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-C2-27.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B8:C2:27:00:00:00 that is B8:C2:27 — 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 PSTec located?

PSTec is listed at #80, Hwanggeum 3-ro 7beon-gil, Yangchon-eup Gimpo-si Gyeonggi-do KR 10048 in the IEEE OUI registry entry for B8:C2:27. This is the address the organization registered with the IEEE, which may differ from its current operating address.

PSTec

MAC address prefix B8:C2:27 is registered to PSTec in the IEEE OUI registry. Any device whose MAC address begins with B8:C2:27 has a network interface built by PSTec. 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 B8:C2:27:00:00:00 to B8:C2:27:FF:FF:FF.

OUI prefix: B8:C2:27
Hyphen form: B8-C2-27
MAC range: B8:C2:27:00:00:00 – B8:C2:27:FF:FF:FF
Addresses in block: 16,777,216
Organization: PSTec
Address: #80, Hwanggeum 3-ro 7beon-gil, Yangchon-eup Gimpo-si Gyeonggi-do KR 10048
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 "PSTec"
archived source →
2026-07-17Assigned to "PSTec"

Nearby in the registry

The prefixes assigned immediately before and after B8:C2:27:

FAQ

Which company owns MAC address prefix B8:C2:27?: MAC address prefix B8:C2:27 is registered to PSTec in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:C2:27 has a network interface built by PSTec.
What is the OUI B8:C2:27?: B8:C2:27 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to PSTec. It covers every address from B8:C2:27:00:00:00 to B8:C2:27:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-C2-27.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B8:C2:27:00:00:00 that is B8:C2:27 — 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 PSTec located?: PSTec is listed at #80, Hwanggeum 3-ro 7beon-gil, Yangchon-eup Gimpo-si Gyeonggi-do KR 10048 in the IEEE OUI registry entry for B8:C2:27. This is the address the organization registered with the IEEE, which may differ from its current operating address.