AB Regin — 00:30:97 (MA-L)

A MAC address starting with 00:30:97 belongs to AB Regin, a Swedish manufacturer of building-management and HVAC control systems. The prefix identifies genuine Regin hardware — freely-programmable controllers, ventilation and heating controllers, room controllers, sensors, actuators, and energy meters — deployed in commercial building-automation networks.

IEEE's public MA-L registry lists the block as registered to AB Regin at Box 366, SE-26123 Landskrona, Sweden. This is the only OUI assignment found under the company's name across the checked IEEE registries, so 00:30:97 is a single-block vendor rather than a large multi-prefix holder.

AB Regin, part of Regin Group, is a documented Swedish building-automation manufacturer founded in 1947. Its earlier Landskrona address matches the registry entry, though R&D has since moved to Lund and the group's headquarters to Kallered. Regin Group also owns DEOS AG and Industrietechnik, and its controllers run alongside the Arrigo BMS/EMS and CLOUDigo cloud platforms.

IEEE publishes no assignment date for this block; a third-party lookup tool's "registered 2000, updated 2015" figures are a database artifact, not an IEEE fact. Separately, two unrelated port registrations for EXOline-TCP/UDP (port 26486) were registered in 2008 and deregistered in 2018 — service-lifecycle dates, not the OUI's allocation date. No CVE or malware association is recorded in the NVD as of an August 2026 search for Regin building-automation hardware.

Vendor

AB Regin (Regin Group), Sweden [Confirmed] — the IEEE MA-L registry 003097

MAC prefix / OUI

00:30:97 (MA-L, /24) [Confirmed] — the IEEE MA-L registry 003097

Registered address

Box 366, SE-26123 Landskrona, Sweden [Confirmed] — the IEEE MA-L registry 003097

Device class

Building-automation/HVAC controllers, room controllers, sensors, actuators, energy meters [Confirmed] — https://www.regincontrols.com/en/se/

Also seen on

DEOS AG and Industrietechnik branded equipment (Regin Group subsidiaries) [Likely] — https://memoori.com/swedish-building-automation-challenger-regin-ab-acquires-deos-ag/

Other OUI assignments

None found beyond 00:30:97 [Confirmed] — the IEEE MA-L registry, the IEEE MA-S registry, the IEEE MA-M registry

IEEE assignment

00:30:97 → AB Regin, registered Landskrona, Sweden [Confirmed] — the IEEE MA-L registry 003097

Registry / block size

MA-L (24-bit OUI), single /24 block [Confirmed] — the IEEE MA-L registry 003097

HQ / country

Box 366, SE-26123 Landskrona, Sweden (registry address); Regin Group HQ now in Kallered, Sweden [Confirmed] — the IEEE MA-L registry 003097; https://www.regingroup.com/

Company status

active, founded 1947, part of Regin Group alongside DEOS AG and Industrietechnik [Confirmed] — https://www.regingroup.com/; https://memoori.com/swedish-building-automation-challenger-regin-ab-acquires-deos-ag/

Device types

freely-programmable controllers (XCA series), ventilation controllers (Corrigo Ardo/Vido), heating controllers (Exigo series), room controllers (Regio RCX), sensors/actuators/energy meters [Confirmed] — https://www.regincontrols.com/en/se/

Notable products

Arrigo BMS/EMS, CLOUDigo cloud platform [Confirmed] — https://www.regincontrols.com/en/se/

Verified sample prefix

00:30:97 (only assignment found under this name) [Confirmed] — the IEEE MA-L registry 003097; the IEEE MA-S registry; the IEEE MA-M registry

Registration date

Unknown — IEEE's public the IEEE MA-L registry publishes no assignment/registration date (columns are only Registry, Assignment, Organization Name, Organization Address) [Confirmed absence] — the IEEE MA-L registry

Third-party date artifact

maclookup.app shows "Initial registration: 09 November 2000" / "Most recent update: 17 November 2015" for 00:30:97 — a third-party database artifact of unverified provenance, not an IEEE fact, and not recorded here as a registration date [Unknown] — https://maclookup.app/macaddress/003097

Unrelated registrations

Two service-name/port registrations, EXOline-TCP and EXOline-UDP on port 26486, registered 2008-12-24 and deregistered 2018-09-13 — these are service-lifecycle dates, not the OUI's allocation date [Confirmed] — the IANA Service Name and Transport Protocol Port Number Registry exoline-tcp 26486/tcp; the IANA Service Name and Transport Protocol Port Number Registry exoline-udp 26486/udp

Security note

no CVE is recorded in the NVD as of an August 2026 search for "Regin" combined with building-automation/controller terms; no malware/trojan association found in the same search [Likely] — https://nvd.nist.gov/

Usage context

BMS/HVAC control hardware sold across European markets (Sweden, Austria, Germany, Denmark, Benelux); the prefix would appear on Regin/DEOS/Industrietechnik-branded controllers and field devices in building networks [Likely] — https://www.regincontrols.com/en/se/

Related vendors

DEOS AG, Industrietechnik (Regin Group subsidiaries) [Likely] — https://memoori.com/swedish-building-automation-challenger-regin-ab-acquires-deos-ag/

Analyst note

00:30:97 is a standard, fully-owned MA-L /24 (not a shared IEEE base), so the prefix reliably identifies Regin Group hardware; it is a low-volume vendor with a single block rather than a consumer-scale manufacturer [Confirmed] — the IEEE MA-L registry 003097