Sonova AG / Sonova Consumer Hearing GmbH — 5 prefixes (MA-L)
Summary
- // what this is
- Sonova is registered to MAC prefix
70:66:1Band 4 more in the IEEE OUI database. When a device's MAC address begins with70:66:1B, that block was registered by Sonova — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Five OUI blocks across two entities plus concrete device/product evidence support a substantive vendor entry rather than a single-OUI shell.
About this vendor.
A MAC address beginning with one of five prefixes registered to Sonova AG or its subsidiary Sonova Consumer Hearing GmbH belongs to a Sonova-brand device, typically a Bluetooth-enabled hearing aid or a related wireless hearing accessory rather than general computing or networking gear.
Sonova AG, headquartered in Stäfa, Switzerland, is a large, publicly known hearing-care group — reported at roughly CHF 3,627M revenue and about 17,990 employees as of 2024 — and one of the largest hearing-aid makers worldwide. It owns well-known brands including Phonak, Unitron, Advanced Bionics, AudioNova, and the Sennheiser consumer-audio line, which together give the OUIs concrete device context beyond a bare registration.
Four of the five blocks (70:66:1B, 2C:53:D7, 80:28:3C, D8:A4:69) sit under Sonova AG at its Stäfa registry address; the fifth (80:C3:BA) is registered separately to Sonova Consumer Hearing GmbH in Wedemark, Germany, a Sonova subsidiary. Holding five distinct MA-L blocks across two related legal entities is itself a substance signal — vendors with multiple OUI assignments are rarely shell registrations.
Documented real-world usage points to Phonak-brand Bluetooth-streaming hearing aids (an FDA MAUDE adverse-event record for the Phonak Audeo Lumity line confirms wireless hardware in the field) and Roger wireless receivers, used with cochlear-implant speech processors following Sonova's acquisition of Advanced Bionics. These devices commonly pair with companion apps such as myPhonak. No CVE or vendor security advisory specific to Sonova/Phonak Bluetooth hearing-aid hardware was found in this pass; general Bluetooth LE MAC-tracking literature exists but is not Sonova-specific and is not treated as a finding here.
- IEEE assignments
- 70661B, 2C53D7, 80283C, D8A469 → Sonova AG; 80C3BA → Sonova Consumer Hearing GmbH [Confirmed] — the IEEE MA-L registry (lines 2801, 24436, 24618, 30492, 31606)
- Registry / block size
- MA-L (24-bit OUI); 5 total blocks across the two entities [Confirmed] — the IEEE MA-L registry
- HQ / country
- Laubisruetistrasse 28, Stäfa, CH 8712, Switzerland (Sonova AG registry address) [Confirmed] — the IEEE MA-L registry
- Secondary entity address
- Am Labor 1, Wedemark, Niedersachsen, DE 30900, Germany (Sonova Consumer Hearing GmbH) [Confirmed] — the IEEE MA-L registry (line 24436)
- Company status
- active, publicly traded hearing-care group [Confirmed] — en.wikipedia.org/wiki/Sonova
- Device types
- Bluetooth-enabled hearing aids, cochlear-implant wireless accessories [Likely] — accessdata.fda.gov MAUDE record; sonova.com
- Notable products
- Phonak Audeo Lumity hearing aids, Roger wireless receivers, myPhonak companion app [Likely] — accessdata.fda.gov MAUDE record; play.google.com
- Verified prefix set (all MA-L)
- 70:66:1B, 2C:53:D7, 80:28:3C, D8:A4:69, 80:C3:BA [Confirmed] — the IEEE MA-L registry
- Registration dates
- Unknown — IEEE OUI registry publishes no assignment/registration date field [Confirmed] — the IEEE MA-L registry structure (no date column)
- Related brands
- Phonak, Unitron, Advanced Bionics, AudioNova, Sennheiser (consumer-audio division) [Confirmed] — en.wikipedia.org/wiki/Sonova
- Analyst note
- Multi-OUI, cross-entity registration plus concrete documented device/product context (FDA-listed hearing aids, cochlear-implant accessories) supports treating this as a substantive vendor, not a shell registration.