Which company owns MAC address prefix AC:01:42?

MAC address prefix AC:01:42 is registered to Uriel Technologies SIA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:01:42 has a network interface built by Uriel Technologies SIA.

What is the OUI AC:01:42?

AC:01:42 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Uriel Technologies SIA. It covers every address from AC:01:42:00:00:00 to AC:01:42:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-01-42.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in AC:01:42:00:00:00 that is AC:01:42 — 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 Uriel Technologies SIA located?

Uriel Technologies SIA is listed at Dzerbenes iela 14 Riga LV LV-1006 in the IEEE OUI registry entry for AC:01:42. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Uriel Technologies SIA

MAC address prefix AC:01:42 is registered to Uriel Technologies SIA in the IEEE OUI registry. Any device whose MAC address begins with AC:01:42 has a network interface built by Uriel Technologies SIA. 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 AC:01:42:00:00:00 to AC:01:42:FF:FF:FF.

OUI prefix: AC:01:42
Hyphen form: AC-01-42
MAC range: AC:01:42:00:00:00 – AC:01:42:FF:FF:FF
Addresses in block: 16,777,216
Organization: Uriel Technologies SIA
Address: Dzerbenes iela 14 Riga LV LV-1006
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 "Uriel Technologies SIA"
archived source →
2026-07-17Assigned to "Uriel Technologies SIA"

Nearby in the registry

The prefixes assigned immediately before and after AC:01:42:

FAQ

Which company owns MAC address prefix AC:01:42?: MAC address prefix AC:01:42 is registered to Uriel Technologies SIA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:01:42 has a network interface built by Uriel Technologies SIA.
What is the OUI AC:01:42?: AC:01:42 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Uriel Technologies SIA. It covers every address from AC:01:42:00:00:00 to AC:01:42:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-01-42.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in AC:01:42:00:00:00 that is AC:01:42 — 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 Uriel Technologies SIA located?: Uriel Technologies SIA is listed at Dzerbenes iela 14 Riga LV LV-1006 in the IEEE OUI registry entry for AC:01:42. This is the address the organization registered with the IEEE, which may differ from its current operating address.