Which company owns MAC address prefix 18:CC:23?

MAC address prefix 18:CC:23 is registered to Philio Technology Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:CC:23 has a network interface built by Philio Technology Corporation.

What is the OUI 18:CC:23?

18:CC:23 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Philio Technology Corporation. It covers every address from 18:CC:23:00:00:00 to 18:CC:23:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-CC-23.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 18:CC:23:00:00:00 that is 18:CC:23 — 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 Philio Technology Corporation located?

Philio Technology Corporation is listed at 8F., No.653-2, Zhongzheng Rd New Taipei TW 242 in the IEEE OUI registry entry for 18:CC:23. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Philio Technology Corporation

MAC address prefix 18:CC:23 is registered to Philio Technology Corporation in the IEEE OUI registry. Any device whose MAC address begins with 18:CC:23 has a network interface built by Philio Technology Corporation. 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 18:CC:23:00:00:00 to 18:CC:23:FF:FF:FF.

OUI prefix: 18:CC:23
Hyphen form: 18-CC-23
MAC range: 18:CC:23:00:00:00 – 18:CC:23:FF:FF:FF
Addresses in block: 16,777,216
Organization: Philio Technology Corporation
Address: 8F., No.653-2, Zhongzheng Rd New Taipei TW 242
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 "Philio Technology Corporation"
archived source →
2026-07-17Assigned to "Philio Technology Corporation"

Nearby in the registry

The prefixes assigned immediately before and after 18:CC:23:

FAQ

Which company owns MAC address prefix 18:CC:23?: MAC address prefix 18:CC:23 is registered to Philio Technology Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:CC:23 has a network interface built by Philio Technology Corporation.
What is the OUI 18:CC:23?: 18:CC:23 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Philio Technology Corporation. It covers every address from 18:CC:23:00:00:00 to 18:CC:23:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-CC-23.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 18:CC:23:00:00:00 that is 18:CC:23 — 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 Philio Technology Corporation located?: Philio Technology Corporation is listed at 8F., No.653-2, Zhongzheng Rd New Taipei TW 242 in the IEEE OUI registry entry for 18:CC:23. This is the address the organization registered with the IEEE, which may differ from its current operating address.