Itron, Inc. — 4 prefixes (MA-L / MA-M)

A MAC address starting 00:25:A7, B4:23:30, 00:07:81, or 5C:F2:86:B/28 belongs to Itron, Inc. (or its UK subsidiary, Itron UK Limited), an American maker of electric, gas, and water metering hardware. These OUIs are most commonly seen on AMI/AMR network equipment — smart meters and the mesh-network gateways that collect their readings — rather than general-purpose computing devices.

Itron is a real, substantial company: founded in 1977, listed on NASDAQ as ITRI, with roughly 8,000 employees and a current headquarters in Liberty Lake, WA. Its flagship product line is the OpenWay CENTRON smart meter family, which uses two-way wireless mesh ("RFLAN") communication between meters and Itron's OpenWay Collection Engine gateways — a networked embedded-device product line that plausibly needs its own MAC/OUI blocks.

The four known blocks reflect the company's history: 00:07:81 traces to Itron's earlier Spokane, WA address, B4:23:30 to the current Liberty Lake HQ, and 00:25:A7 to a secondary US site in Norcross, GA. All three are confirmed in the cached IEEE registry. 5C:F2:86:B/28 is Itron UK Limited's MA-M (28-bit) sub-allocation, registered in Great Yarmouth, GB, beneath the wider 5C:F2:86 base — that base itself is held by the IEEE Registration Authority and sub-allocated to many unrelated companies, so it is never claimed here as Itron's own.

Security researchers at Idaho National Laboratory identified exploitable vulnerabilities in early deployed Itron OpenWay AMI meter units, reported around 2009. In response, Itron added hardware-level encryption to OpenWay and adopted Certicom's AMI 7000 series (elliptic-curve cryptography) for meter-to-Collection-Engine communication security. A separate, more recent breach claim could not be verified in this pass and is not treated as fact.

IEEE assignment

00:25:A7 → itron, registered Norcross, GA, US [Confirmed] — the IEEE MA-L registry (line 12392); registry class MA-L

Additional prefixes

B4:23:30 (Itron Inc, Liberty Lake, WA — current HQ) [Confirmed] — the IEEE MA-L registry (line 1236); 00:07:81 (Itron Inc., Spokane, WA — former HQ) [Confirmed] — the IEEE MA-L registry (line 13579)

UK subsidiary block

5C:F2:86:B/28 → Itron UK Limited, Great Yarmouth, GB [Confirmed] — the IEEE MA-M registry (line 6000); registry class MA-M (28-bit). The wider 5C:F2:86 base is held by the IEEE Registration Authority (the IEEE MA-L registry, line 34569) and sub-allocated to many unrelated companies — Itron UK's holding is only the /28 beneath it.

Registry / block size

MA-L (24-bit) for three US blocks; MA-M (28-bit) for the UK block [Confirmed] — IEEE registry classes per source above

HQ / country

2111 N Molter Rd, Liberty Lake, WA 99019, US (current HQ, per B4:23:30 registration); registry address for 00:25:A7 is 5390 Triangle Parkway, Norcross, GA 30092, US [Confirmed] — the IEEE MA-L registry

Company status

active, publicly traded (NASDAQ: ITRI) [Confirmed] — en.wikipedia.org/wiki/Itron

Device types

electric meters, gas meters, water meters, AMI/AMR mesh network gateways [Confirmed] — docs.itrontotal.com

Notable products

OpenWay CENTRON smart meter family, OpenWay Collection Engine [Confirmed] — docs.itrontotal.com

Registration date

not published by IEEE for any of these prefixes [Unknown] — IEEE OUI registry publishes no assignment/registration dates by design

Security note

Idaho National Laboratory documented exploitable vulnerabilities in deployed OpenWay AMI meter units (~2009); Itron responded by adding hardware-level encryption and Certicom AMI 7000 (ECC) [Likely] — spokesman.com (2009), investors.itron.com, certicom.com PDF

Related vendors

Itron UK Limited (subsidiary, holds the 5C:F2:86:B/28 MA-M sub-allocation beneath the shared 5C:F2:86 base) [Confirmed] — the IEEE MA-M registry (line 6000)

Analyst note

an Itron OUI reliably indicates utility metering/AMI hardware from a real, substantive company (multiple OUI blocks across two countries, a named flagship product line) rather than a bare single-OUI shell registration; all four prefixes (00:25:A7, B4:23:30, 00:07:81, 5C:F2:86:B/28) are confirmed against the cached IEEE registry.