Which company owns MAC address prefix A0:44:66?

MAC address prefix A0:44:66 is registered to Intellics in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:44:66 has a network interface built by Intellics.

What is the OUI A0:44:66?

A0:44:66 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Intellics. It covers every address from A0:44:66:00:00:00 to A0:44:66:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-44-66.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:44:66:00:00:00 that is A0:44:66 — 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 Intellics located?

Intellics is listed at 697, Pangyo-ro, Bundang-gu Seongnam-si Gyeonggi-do KR 13511 in the IEEE OUI registry entry for A0:44:66. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Intellics

MAC address prefix A0:44:66 is registered to Intellics in the IEEE OUI registry. Any device whose MAC address begins with A0:44:66 has a network interface built by Intellics. 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 A0:44:66:00:00:00 to A0:44:66:FF:FF:FF.

OUI prefix: A0:44:66
Hyphen form: A0-44-66
MAC range: A0:44:66:00:00:00 – A0:44:66:FF:FF:FF
Addresses in block: 16,777,216
Organization: Intellics
Address: 697, Pangyo-ro, Bundang-gu Seongnam-si Gyeonggi-do KR 13511
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 (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-07-17Assigned to "Intellics"

Nearby in the registry

The prefixes assigned immediately before and after A0:44:66:

FAQ

Which company owns MAC address prefix A0:44:66?: MAC address prefix A0:44:66 is registered to Intellics in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:44:66 has a network interface built by Intellics.
What is the OUI A0:44:66?: A0:44:66 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Intellics. It covers every address from A0:44:66:00:00:00 to A0:44:66:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-44-66.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:44:66:00:00:00 that is A0:44:66 — 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 Intellics located?: Intellics is listed at 697, Pangyo-ro, Bundang-gu Seongnam-si Gyeonggi-do KR 13511 in the IEEE OUI registry entry for A0:44:66. This is the address the organization registered with the IEEE, which may differ from its current operating address.