Frontier Smart Technologies Ltd — 4C:09:FA (MA-L)

Frontier Smart Technologies (formerly Frontier Silicon) is a Cambridge-UK fabless semiconductor and audio-module company, a subsidiary of Science Group plc, and the long-standing dominant supplier of DAB/DAB+ and internet-radio chipsets worldwide. The IEEE registers the OUI 4C:09:FA as an MA-L block to "FRONTIER SMART TECHNOLOGIES LTD" at 17 Waterloo Place, London. A device seen with this prefix is almost certainly a consumer internet radio or smart-audio product — Frontier's modules (Venice, Kino, Minuet, Magic X, Siena, OKTIV, AURIA) embed into OEM products from Bose, Denon, JBL, Grundig, Panasonic, Philips, Pioneer, Pure, Roberts, Sony, TechniSat, Yamaha and 40-plus other brands, with the company citing over 80 million devices shipped. Network exposure is the practical asset-classification signal: these devices speak the Frontier Silicon API (FSAPI), an HTTP control interface reachable on port 80 (and port 2244 on some models) whose only access guard is a PIN that defaults to "1234" — widely documented and polled by home-automation platforms such as Home Assistant and openHAB. No CVEs are on record for FSAPI or Frontier chipsets, and newer modules (FS2260 Magic X) are positioned for EU Cyber Resilience Act compliance, but legacy units remain a moderate IoT risk on the local network. As with any OUI, the prefix reliably identifies the manufacturer of the network interface, not the end-product brand on the casing.

IEEE assignment

4C:09:FA → FRONTIER SMART TECHNOLOGIES LTD [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 602)

Registry / block size

MA-L (24-bit OUI; ~16.7M addresses) [Confirmed] — IEEE MA-L. NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party MAC-lookup tools is a database artifact, not an IEEE fact.

Registry address / country

17 Waterloo Place, London, SW1Y 4AR, GB [Confirmed] — IEEE MA-L

No match in adjacent registries

not present in mam.csv (MA-M) or oui36.csv (MA-S) [Confirmed] — enrichment/registries

Vendor name

Frontier Smart Technologies; formerly Frontier Silicon (both names persist in firmware repos and community tooling) [Confirmed] — frontiersmart.com, github.com/MatrixEditor/frontier-silicon-firmwares

Company status / structure

active; subsidiary of Science Group plc (AIM: SAG) [Confirmed] — frontiersmart.com

Founded

2001 (UK company number 04213838) [Confirmed] — Companies House (find-and-update.company-information.service.gov.uk/company/04213838)

Corporate HQ

Harston, Cambridge, United Kingdom; additional R&D in Cambridge and manufacturing/sales presence in Shenzhen, China (distinct from the London registry address) [Confirmed] — frontiersmart.com

Device types

consumer connected-audio / digital-radio devices — internet radios, DAB/DAB+ radios, smart speakers, wireless and docking audio systems, multi-room audio [Confirmed] — frontiersmart.com/products

Notable OEM customers

Bose, Denon, JBL, Grundig, Panasonic, Philips, Pioneer, Pure, Roberts, Sony, TechniSat, Yamaha and 40+ brands; 80M+ devices shipped [Confirmed] — frontiersmart.com

Module/chip families

Venice, Kino, Minuet, Magic X (FS2260), Siena, OKTIV, AURIA [Confirmed] — frontiersmart.com, github.com/MatrixEditor/frontier-silicon-firmwares

Network interfaces

Wi-Fi (802.11b/g on older Venice; dual-band 802.11n 2.4/5 GHz on Milan and later); optional 10/100 Ethernet MAC/PHY; Bluetooth 5 on newer Magic X/FS2260 modules [Confirmed; per-module support varies] — Frontier Silicon Milan press release (sify.com), home-assistant.io/integrations/frontier_silicon

Local control API

FSAPI (Frontier Silicon API) over HTTP on port 80 (port 2244 on some models), PIN-authenticated, default PIN 1234; legacy devices allow only one session at a time [Confirmed] — home-assistant.io/integrations/frontier_silicon, github.com/flammy/fsapi

Security context

moderate IoT risk on LAN. FSAPI is unauthenticated-by-default beyond a widely-documented default PIN (1234); no public CVEs found for FSAPI or Frontier chipsets; community firmware archives exist (research interest); single-session limit on older units is a minor LAN denial-of-service vector; FS2260 Magic X positioned for EU Cyber Resilience Act compliance [Confirmed] — home-assistant.io/integrations/frontier_silicon, github.com/MatrixEditor/frontier-silicon-firmwares, github.com/flammy/fsapi

Vendor website

https://www.frontiersmart.com/ [Confirmed] — frontiersmart.com

Analyst note

a 4C:09:FA address reliably identifies a Frontier-made network interface inside a consumer audio device; the brand on the enclosure will usually be an OEM customer, not Frontier. The FSAPI HTTP interface (default PIN 1234, port 80/2244) is the primary network-exposure consideration on legacy units.