Dyson Limited — 3 prefixes (MA-L)

A MAC address starting 44:6F:F8, C8:FF:77, or C0:AF:F2 belongs to Dyson Limited, typically seen on WiFi-connected Dyson consumer appliances — air purifiers and fans in the Pure Cool line, plus heaters — paired with the MyDyson/Dyson Link app.

The IEEE OUI registry lists three MA-L (24-bit) registrations for Dyson Limited, all under the same UK registered-office address: Tetbury Hill, Malmesbury, Wiltshire, GB SN16 0RP. That address is independently corroborated by third-party UK business listings, not just the IEEE filing itself.

IEEE's public OUI data does not publish an assignment or registration date for any of the three blocks. Any "date registered" shown by a third-party MAC-lookup tool is a database artifact of that tool, not an IEEE fact, and should not be attributed to IEEE.

Setup and troubleshooting guides for Dyson's connected devices have owners enter the unit's printed MAC address during app pairing, and that address needs allowlisting on networks with MAC filtering enabled. No publicized CVE-level or named vulnerability specific to Dyson's WiFi-connected devices turned up; Dyson runs a formal, monitored vulnerability-disclosure channel.

IEEE assignment

3 prefixes → Dyson Limited, registered Tetbury Hill, Malmesbury, Wiltshire, GB SN16 0RP [Confirmed] — IEEE OUI Registry (the IEEE MA-L registry, lines 16870, 19371, 31240)

Registry / block size

MA-L (24-bit OUI); 3 IEEE prefixes [Confirmed] — IEEE OUI Registry (the IEEE MA-L registry). NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

Tetbury Hill, Malmesbury, Wiltshire, GB SN16 0RP, UK (registry address) [Confirmed] — IEEE OUI Registry; independently corroborated by craft.co and healthestatejournal.com

Company status

active [Confirmed] — dyson.com

Device types

WiFi-connected consumer appliances — air purifiers (Pure Cool), fans, heaters, paired with the MyDyson/Dyson Link app [Confirmed] — dyson.com/app

Notable products

Dyson Pure Cool / Purifier air treatment line

Verified sample prefixes (all MA-L, Dyson Limited)

44:6F:F8, C8:FF:77, C0:AF:F2 [Confirmed] — IEEE OUI Registry (the IEEE MA-L registry)

Registration dates

Unknown — IEEE OUI registry does not track or publish MAC prefix registration dates [Confirmed] — IEEE OUI Registry documentation

Security context

no publicized CVE-level or named vulnerability specific to Dyson WiFi-connected devices found; Dyson maintains a formal vulnerability-disclosure channel [Unknown] — dyson.co.uk/support/reporting-data-security-issues

Third-party risk score caveat

a third-party aggregator (Rankiteo) publishes a proprietary "Cyber Risk Score" for Dyson; not treated as authoritative (opaque methodology, not a primary disclosure) and not cited as fact [Unknown]

Analyst note

company substance for this vendor rests on 3 distinct MA-L OUI blocks under one identifiable global consumer-electronics company with verifiable WiFi-device/app context — this clears the bar to finalize rather than treat as a bare single-OUI shell.