Which company owns MAC address prefix 48:C3:B0?

MAC address prefix 48:C3:B0 is registered to Pharos Co.Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:C3:B0 has a network interface built by Pharos Co.Ltd.

What is the OUI 48:C3:B0?

48:C3:B0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Pharos Co.Ltd. It covers every address from 48:C3:B0:00:00:00 to 48:C3:B0:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-C3-B0.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 48:C3:B0:00:00:00 that is 48:C3:B0 — 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 Pharos Co.Ltd located?

Pharos Co.Ltd is listed at 503 Ogong-ro 144 Deokjin-gu Jeonju-si KR 54873 in the IEEE OUI registry entry for 48:C3:B0. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Pharos Co.Ltd

MAC address prefix 48:C3:B0 is registered to Pharos Co.Ltd in the IEEE OUI registry. Any device whose MAC address begins with 48:C3:B0 has a network interface built by Pharos 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 48:C3:B0:00:00:00 to 48:C3:B0:FF:FF:FF.

OUI prefix: 48:C3:B0
Hyphen form: 48-C3-B0
MAC range: 48:C3:B0:00:00:00 – 48:C3:B0:FF:FF:FF
Addresses in block: 16,777,216
Organization: Pharos Co.Ltd
Address: 503 Ogong-ro 144 Deokjin-gu Jeonju-si KR 54873
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 "Pharos Co.Ltd"
archived source →
2026-07-17Assigned to "Pharos Co.Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 48:C3:B0:

FAQ

Which company owns MAC address prefix 48:C3:B0?: MAC address prefix 48:C3:B0 is registered to Pharos Co.Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:C3:B0 has a network interface built by Pharos Co.Ltd.
What is the OUI 48:C3:B0?: 48:C3:B0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Pharos Co.Ltd. It covers every address from 48:C3:B0:00:00:00 to 48:C3:B0:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-C3-B0.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 48:C3:B0:00:00:00 that is 48:C3:B0 — 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 Pharos Co.Ltd located?: Pharos Co.Ltd is listed at 503 Ogong-ro 144 Deokjin-gu Jeonju-si KR 54873 in the IEEE OUI registry entry for 48:C3:B0. This is the address the organization registered with the IEEE, which may differ from its current operating address.