Frontier Silicon Ltd — 30:58:90, 00:22:61 (MA-L)

A MAC address beginning 30:58:90 or 00:22:61 belongs to Frontier Silicon Ltd, registered at 137 Euston Road, London under IEEE MA-L. Frontier Silicon was the original legal and brand name of the company now trading as Frontier Smart Technologies Ltd, which holds a separate OUI (4C:09:FA) documented in this site's sister entry — these two blocks predate that rename and sit at a different registry address.

Two now-dissolved UK entities corroborate the timeline. FRONTIER SILICON (HOLDINGS) LIMITED (company no. 04906048) incorporated 19 September 2003 and dissolved 5 May 2015, registered at 4th Floor, 137 Euston Road — an exact match to both OUI registrant addresses. A second entity, FRONTIER SILICON LIMITED (company no. 10394377), incorporated 26 September 2016 and dissolved 22 September 2020, sat at Harston Mill, Cambridge — the same town where the successor Frontier Smart Technologies is now headquartered.

Secondary business-directory sources describe Frontier Silicon as a fabless chipset and module supplier for DAB/DAB+ digital radios and Wi-Fi-connected audio devices, with OEM customers overlapping the successor company's documented list: Sony, Philips, Pure, Panasonic, Roberts, Grundig, Bose, and Bang & Olufsen. No source ties a specific captured device MAC to either 30:58:90 or 00:22:61 directly, so the device-type link here sits at the company-identity level rather than a confirmed field sighting.

Because Frontier Silicon is literally the sister entry's documented former name, treat this page as a distinct historical-registrant record for these two blocks rather than a restatement of the successor company's product page — the underlying business is the same lineage, but the OUI records, addresses, and legal entities differ.

Vendor name

Frontier Silicon Ltd (pre-rename legal/brand name; successor is Frontier Smart Technologies Ltd)

Device class

DAB/DAB+ digital radio and Wi-Fi-connected audio chipsets/modules (company-identity level, not a confirmed device sighting)

Also seen on

OEM audio products from Sony, Philips, Pure, Panasonic, Roberts, Grundig, Bose, and Bang & Olufsen (per secondary business-directory sources)

Related entry

vendor-frontier-smart-technologies (4C:09:FA, current name, different registry address)

Company status

dissolved — two related UK entities (Companies House 04906048 dissolved 2015-05-05; 10394377 dissolved 2020-09-22); the operating business continues today as Frontier Smart Technologies Ltd

IEEE assignment

30:58:90 and 00:22:61 → Frontier Silicon Ltd [Confirmed] — the IEEE MA-L registry 305890, the IEEE MA-L registry 002261

Registry / block size

MA-L (24-bit OUI) for both prefixes [Confirmed] — the IEEE MA-L registry 305890, the IEEE MA-L registry 002261. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" shown on third-party MAC-lookup tools for these prefixes is a database artifact, not an IEEE fact.

Registry address / country

137 Euston Road, London, GB NW1 2AA [Confirmed] — the IEEE MA-L registry 305890, the IEEE MA-L registry 002261

No match in adjacent registries

not present in the IEEE MA-M registry (MA-M) or the IEEE MA-S registry (MA-S) [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

Company status / structure

two related UK entities, both now dissolved — FRONTIER SILICON (HOLDINGS) LIMITED (04906048), registered office matching the OUI address exactly; FRONTIER SILICON LIMITED (10394377), registered office at Harston Mill, Cambridge [Confirmed] — find-and-update.company-information.service.gov.uk/company/04906048, find-and-update.company-information.service.gov.uk/company/10394377

Incorporation / dissolution dates

04906048 incorporated 2003-09-19, dissolved 2015-05-05; 10394377 incorporated 2016-09-26, dissolved 2020-09-22 [Confirmed] — Companies House filings (as above)

Successor / rename

Frontier Silicon renamed to Frontier Smart Technologies Ltd; the operating business continues under the new name [Confirmed] — frontiersmart.com/frontier-silicon-renamed-frontier-smart-technologies

Device types

DAB/DAB+ digital radio and Wi-Fi-connected/smart-audio chipsets and modules [Likely] — yell.com business directory listing, frontiersmart.com rename history page

Notable OEM customers (secondary-sourced, overlapping the successor entry's list)

Sony, Philips, Pure, Panasonic, Roberts, Grundig, Bose, Bang & Olufsen [Likely] — yell.com/biz/frontier-silicon-ltd-london-7736965

Founding year / Toumaz Group note

secondary aggregator sources state founded 2001, joined the Toumaz Group August 2012; not corroborated against a primary filing or press release [Unknown — unverified primary] — no primary citation found

Security context

no CVE recorded for "Frontier Silicon" as of an August 2026 web search [Confirmed negative] — no source found

Related vendors

Frontier Smart Technologies Ltd (successor company, OUI 4C:09:FA) [Confirmed] — /mac/vendor/frontier-smart-technologies/

Analyst note

a 30:58:90 or 00:22:61 address identifies a Frontier Silicon-made network interface predating the company's rename to Frontier Smart Technologies; cross-reference the successor entry rather than treating this as a duplicate — the OUI records, registry addresses, and legal entities are distinct even though the corporate lineage is the same.