B&W Group Ltd — 2 prefixes (MA-L)

A MAC address beginning with EC:66:D1 or D8:1E:DE belongs to B&W Group Ltd, the registrant entity behind British audio brand Bowers & Wilkins. These addresses typically show up on Wi-Fi-connected consumer audio hardware — multi-room speakers, soundbars, and headphones — rather than networking infrastructure.

The registry holds two separate full MA-L (/24) blocks under this exact company name, not one shared base split across unrelated registrants: EC:66:D1, registered to an address in Worthing, West Sussex, UK, and D8:1E:DE, registered to an address in Lachine, Quebec, Canada. Both rows carry the registry's own MA-L classification, confirming direct block ownership rather than a sub-allocation.

B&W Group Ltd traces to Bowers & Wilkins, founded after WWII by John Bowers and Roy Wilkins, headquartered in Worthing — the same town as the EC:66:D1 registration address, which corroborates the registry entry. The company was acquired by Eva Automation in 2016 and by Sound United in October 2020, its current parent.

A naming trap worth flagging: "BW Broadcast," a separate UK radio-transmission equipment maker registered at 58:D0:71 in Croydon, is an unrelated company despite the similar abbreviation. Do not conflate the two when researching this entry. No CVE or security advisory naming Bowers & Wilkins or B&W Group was found as of an August 2026 search.

IEEE assignment

EC:66:D1 → B&W Group LTD, Dale Road, Worthing, Sussex, GB BN11 2BH [Confirmed] — the IEEE MA-L registry EC66D1

IEEE assignment

D8:1E:DE → B&W Group Ltd, 5070 Francois Cusson, Lachine, Quebec, CA H8T1B3 [Confirmed] — the IEEE MA-L registry D81EDE

Registry / block size

MA-L (24-bit OUI); two full blocks under this registrant name; no MA-M/MA-S sub-allocations found for this company [Confirmed] — the IEEE MA-L registry (grep across the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry)

Company identity

B&W Group Ltd is the parent/registrant entity for Bowers & Wilkins, a British loudspeaker and headphone manufacturer headquartered in Worthing, West Sussex — matching the EC:66:D1 registry address [Confirmed] — https://en.wikipedia.org/wiki/Bowers_%26_Wilkins

Company history / ownership

founded post-WWII by John Bowers and Roy Wilkins; acquired by Eva Automation in 2016, then by Sound United in October 2020 (current parent) [Confirmed] — https://en.wikipedia.org/wiki/Bowers_%26_Wilkins

Company status

active [Confirmed] — https://www.bowerswilkins.com

Device types

Wi-Fi-connected multi-room speakers, soundbars, headphones (Formation Series, Zeppelin, Panorama lines are app-paired/Wi-Fi per the vendor's own product page) [Likely] — https://www.bowerswilkins.com/en-us/category/formation-series/

Security posture

no CVE or security advisory naming Bowers & Wilkins, B&W Group, or the Formation/Zeppelin/Panorama lines found as of an August 2026 search of NVD and general web search; an unrelated 2025 Airoha-chipset Bluetooth vulnerability set (CVE-2025-20700/20701/20702) affecting other brands (Sony, Bose, JBL, Marshall) does not name this vendor [Likely] — https://www.ecoustics.com/news/bluetooth-headphones-security-advisory/, https://www.malwarebytes.com/blog/news/2025/07/bluetooth-vulnerability-in-audio-devices-can-be-exploited-to-spy-on-users

Third-party date artifacts

maclookup.app and udger.com show "registered"/"updated" dates for EC66D1 and D81EDE; these are third-party database-scrape artifacts, not IEEE facts — IEEE's the IEEE MA-L registry publishes no registration-date field

[Confirmed] — https://maclookup.app/macaddress/ec66d1, https://udger.com/resources/mac-address-vendor-detail?name=bw_group_ltd

Naming caution

"BW Broadcast" (UK radio-transmission equipment maker, MA-L 58:D0:71, Croydon, Surrey, GB) is an unrelated company despite the similar name; do not conflate with B&W Group Ltd / Bowers & Wilkins [Confirmed] — the IEEE MA-L registry 58D071

Analyst note

EC:66:D1 and D8:1E:DE are both full, independently-registered MA-L blocks held by the same company (not a shared IEEE base) — a genuine multi-OUI vendor. Treat OUI hits from either block as consistent with Bowers & Wilkins audio hardware, not as proof of a specific device without corroborating traffic evidence.