GN Audio A/S (Jabra) — 7 prefixes (MA-L); enterprise & consumer audio peripherals, OUI = headset/speakerphone/conference cam

GN Audio A/S holds seven MA-L (24-bit OUI) blocks in the IEEE registry — 08:C8:C2, 30:50:75, 50:C2:75, 50:C2:ED, 6C:FB:ED, 70:BF:92, and 74:5C:4B — all registered to the same address at Lautrupbjerg 7, Ballerup, DK-2750, Denmark. Combined, the seven large blocks cover on the order of 117 million addresses. GN Audio is the legal entity behind the Jabra brand (plus BlueParrott and FalCom), a Danish subsidiary of GN Store Nord A/S (GN Group), a conglomerate listed on Nasdaq Copenhagen whose roots trace to The Great Northern Telegraph Company (1869). These OUIs surface on a narrow, consistent device class: professional and consumer Bluetooth/DECT/wired headsets and earbuds (Jabra Evolve, Evolve2, Engage series), UC and contact-center headsets, true-wireless earbuds, speakerphones, and videoconferencing cameras (Jabra PanaCast). For triage, a GN Audio OUI reliably indicates an audio peripheral — a headset, speakerphone, or conference camera — not a server, router, or general-purpose host. Most connect over a USB dongle or Bluetooth to a host PC, so Bluetooth-attached units appear on the host's Bluetooth stack rather than directly on an Ethernet segment; a GN Audio OUI on a wired segment is atypical and worth investigating. No GN Audio/Jabra device fills an infrastructure role.

IEEE assignment

7 prefixes → GN Audio A/S (08:C8:C2, 30:50:75, 50:C2:75, 50:C2:ED, 6C:FB:ED, 70:BF:92, 74:5C:4B), registered Ballerup, Denmark [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv)

Registry / block size

MA-L (24-bit OUI); 7 blocks combined (~117M addresses); no MA-M or MA-S assignments on file [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv; mam.csv, oui36.csv: no matches)

HQ / country

Lautrupbjerg 7, Ballerup, DK-2750, Denmark (DK) — registry address and GN Group HQ, north of Copenhagen [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv); https://en.wikipedia.org/wiki/GN_Store_Nord

Company status

active; Jabra-brand subsidiary of GN Store Nord A/S (GN Group), Nasdaq Copenhagen-listed; group founded 1869 as The Great Northern Telegraph Company [Confirmed] — https://www.gn.com/about/gn-group, https://en.wikipedia.org/wiki/GN_Store_Nord

Brand(s)

Jabra (primary consumer/enterprise audio brand); also BlueParrott and FalCom under the GN Audio umbrella [Confirmed] — https://en.wikipedia.org/wiki/Jabra_(brand), https://www.gn.com/about/gn-group

Device types

Bluetooth/DECT/wired headsets and earbuds (Jabra Evolve/Evolve2/Engage), UC & contact-center headsets, true-wireless earbuds, speakerphones, videoconferencing cameras (Jabra PanaCast) [Confirmed] — https://en.wikipedia.org/wiki/Jabra_(brand), https://www.jabra.com/supportpages/security-center

Notable products

Jabra Evolve / Evolve2 series headsets, Engage DECT headsets, Jabra Speak speakerphones, PanaCast conferencing cameras

Verified prefix sample (all MA-L, GN Audio A/S)

6C:FB:ED, 50:C2:75, 08:C8:C2 [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv); https://maclookup.app/vendors/gn-audio-a-s

Registration date

not stated — IEEE publishes no assignment/registration date in the public OUI CSVs (columns are Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party lookup tools is a database artifact, not an IEEE fact [Confirmed — abstention by design] — IEEE oui.csv schema

Security context

GN Audio/Jabra devices have been subject to two classes of Bluetooth weakness. (1) KNOB and BIAS attacks — industry-wide Bluetooth Classic flaws; Jabra has issued Security Incident Bulletins (updated through Sept 2025) listing affected Jabra/Engage models. (2) Airoha RACE-protocol vulnerabilities (CVE-2025-20700/20701/20702) in Airoha Bluetooth SoCs used across many headset brands — attack vector is Bluetooth proximity (no pairing required on vulnerable devices); an attacker in range can extract Link Keys, impersonate the device, eavesdrop via the mic, or hijack calls. Jabra is cited positively for transparency (public affected-device lists, CVE references in firmware notes, a maintained Security Center); the Jabra Elite 8 Active is noted as enforcing pairing, mitigating CVE-2025-20701 [Likely — single research angle (W1), multi-source] — https://insinuator.net/2025/12/bluetooth-headphone-jacking-full-disclosure-of-airoha-race-vulnerabilities/, https://www.jabra.com/_/media/Files/Security-Center/Jabra-Security-Incident-Bulletin-250923.pdf

IANA Reference

not applicable — no IANA RFC reference applies to OUI vendor entries; field stays blank [Confirmed]

Related vendors

GN Store Nord A/S / GN Group (parent); Airoha (Bluetooth SoC supplier implicated in CVE-2025-20700/01/02); cross-reference the Airoha entry for the chipset-side context

Analyst note

A GN Audio OUI is a strong indicator of a Jabra headset, speakerphone, or conferencing camera — an audio peripheral, never infrastructure. Bluetooth-connected units ride the host PC's Bluetooth stack, not the Ethernet segment, so a GN Audio OUI directly on a wired segment is atypical and warrants a look.