Which company owns MAC address prefix 00:72:30?

MAC address prefix 00:72:30 is registered to Nordic Semiconductor ASA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:72:30 has a network interface built by Nordic Semiconductor ASA.

What is the OUI 00:72:30?

00:72:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nordic Semiconductor ASA. It covers every address from 00:72:30:00:00:00 to 00:72:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-72-30.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:72:30:00:00:00 that is 00:72:30 — 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 Nordic Semiconductor ASA located?

Nordic Semiconductor ASA is listed at Otto Nielsens veg 12 Trondheim NO NO-7052 in the IEEE OUI registry entry for 00:72:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Nordic Semiconductor ASA

MAC address prefix 00:72:30 is registered to Nordic Semiconductor ASA in the IEEE OUI registry. Any device whose MAC address begins with 00:72:30 has a network interface built by Nordic Semiconductor ASA. 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 00:72:30:00:00:00 to 00:72:30:FF:FF:FF.

OUI prefix: 00:72:30
Hyphen form: 00-72-30
MAC range: 00:72:30:00:00:00 – 00:72:30:FF:FF:FF
Addresses in block: 16,777,216
Organization: Nordic Semiconductor ASA
Address: Otto Nielsens veg 12 Trondheim NO NO-7052
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.

2026-08-15Assigned to "Nordic Semiconductor ASA"

Nearby in the registry

The prefixes assigned immediately before and after 00:72:30:

FAQ

Which company owns MAC address prefix 00:72:30?: MAC address prefix 00:72:30 is registered to Nordic Semiconductor ASA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:72:30 has a network interface built by Nordic Semiconductor ASA.
What is the OUI 00:72:30?: 00:72:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nordic Semiconductor ASA. It covers every address from 00:72:30:00:00:00 to 00:72:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-72-30.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:72:30:00:00:00 that is 00:72:30 — 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 Nordic Semiconductor ASA located?: Nordic Semiconductor ASA is listed at Otto Nielsens veg 12 Trondheim NO NO-7052 in the IEEE OUI registry entry for 00:72:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.