Which company owns MAC address prefix B4:23:30?

MAC address prefix B4:23:30 is registered to Itron Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:23:30 has a network interface built by Itron Inc.

What is the OUI B4:23:30?

B4:23:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Itron Inc. It covers every address from B4:23:30:00:00:00 to B4:23:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-23-30.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:23:30:00:00:00 that is B4:23:30 — 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 Itron Inc located?

Itron Inc is listed at 2111 N Molter Rd Liberty Lake WA US 99019 in the IEEE OUI registry entry for B4:23:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Itron Inc

MAC address prefix B4:23:30 is registered to Itron Inc in the IEEE OUI registry. Any device whose MAC address begins with B4:23:30 has a network interface built by Itron Inc. 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 B4:23:30:00:00:00 to B4:23:30:FF:FF:FF.

OUI prefix: B4:23:30
Hyphen form: B4-23-30
MAC range: B4:23:30:00:00:00 – B4:23:30:FF:FF:FF
Addresses in block: 16,777,216
Organization: Itron Inc
Address: 2111 N Molter Rd Liberty Lake WA US 99019
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.

2020-08-05Assigned to "Itron Inc"
archived source →
2026-07-17Assigned to "Itron Inc"

Nearby in the registry

The prefixes assigned immediately before and after B4:23:30:

FAQ

Which company owns MAC address prefix B4:23:30?: MAC address prefix B4:23:30 is registered to Itron Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:23:30 has a network interface built by Itron Inc.
What is the OUI B4:23:30?: B4:23:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Itron Inc. It covers every address from B4:23:30:00:00:00 to B4:23:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-23-30.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:23:30:00:00:00 that is B4:23:30 — 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 Itron Inc located?: Itron Inc is listed at 2111 N Molter Rd Liberty Lake WA US 99019 in the IEEE OUI registry entry for B4:23:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.