Telefield
Summary
- // what this is
- Telefield is registered to MAC prefix
000E5Aand 1 more in the IEEE OUI database. When a device's MAC address begins with000E5A, that block was registered by Telefield — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Because these two single-OUI registrants only share a name, identify which company a MAC belongs to by its prefix before drawing conclusions: 00:0E:5A points to Korean carrier-network hardware from TELEFIELD inc., while 6C:A9:06 points to a Hong Kong EMS/OEM manufacturer, Telefield Ltd, whose products typically ship under a client's own brand.
About this vendor.
A MAC address starting 00:0E:5A belongs to TELEFIELD inc., a South Korean carrier-network equipment maker, while one starting 6C:A9:06 belongs to Telefield Ltd, an unrelated Hong Kong contract electronics manufacturer that only shares the same Latin-script name.
TELEFIELD inc. is a publicly listed company (KOSDAQ: 091440), founded in 2000 and headquartered in Pangyo Innovalley, Seongnam-si, South Korea. It develops and manufactures carrier-grade networking gear: Carrier Ethernet switches, MSPP (Multi-Service Provisioning Platform) systems, optical leased-line equipment, optical channel subscriber multiplexers, and IoT solutions, sold to telecom operators, financial institutions, large corporations, and Korean military/public-sector customers.
Telefield Ltd is a Hong Kong-incorporated (since 1992) Electronics Manufacturing Services (EMS) company operating as an OEM/ODM contract manufacturer, with R&D in Shenzhen and manufacturing in Guangzhou. Its own site shows contract work such as PCB/PCBA assembly, casing assembly, and IC bonding, alongside consumer items like handheld fans and battery packs; other company profiles describe target markets spanning telecom accessories, multimedia, healthcare, babycare/monitoring, automotive telematics, security, and household-appliance electronics. As a contract manufacturer, devices carrying this OUI most likely ship under a client's brand rather than Telefield's own.
No CVE, malware association, or security advisory referencing either company was found in the NVD or general web search as of a September 2026 search.
- Prefixes
- 00:0E:5A (TELEFIELD inc., South Korea); 6C:A9:06 (Telefield Ltd, Hong Kong)
- Registrant relationship
- Two unrelated companies that share only a name in Latin script
- Device class (000E5A)
- Carrier Ethernet switches, optical MSPP, optical leased-line systems, optical channel subscriber multiplexers
- Device class (6CA906)
- Contract-manufactured (OEM/ODM) electronics; end devices likely carry a client brand rather than Telefield's own
- Public listing
- TELEFIELD inc. trades on KOSDAQ as 091440
- Security record
- No CVE or malware association found as of a September 2026 search
- Prefixes
- 00:0E:5A, 6C:A9:06 — [Confirmed] the IEEE MA-L registry
- Registry
- MA-L (IEEE) — [Confirmed] the IEEE MA-L registry
- Company
- TELEFIELD inc. (South Korea, 000E5A) and Telefield Ltd (Hong Kong, 6CA906), two unrelated companies — [Confirmed] the IEEE MA-L registry
- Registered address
- Seoul KR 138-190 (000E5A); Hongkong CN (6CA906) — [Confirmed] the IEEE MA-L registry
- Country
- South Korea (000E5A); Hong Kong SAR, China (6CA906) — [Confirmed] the IEEE MA-L registry
- Total prefix count
- 1 OUI held by each company (2 total) — [Confirmed] the IEEE MA-L registry
- Organization status
- TELEFIELD inc. publicly listed, KOSDAQ 091440, founded 2000 — [Likely] https://www.marketscreener.com/quote/stock/TELEFIELD-INC-120962548/ ; Telefield Ltd privately held, incorporated 1992 — [Likely] https://www.telefield.com.hk/en/
- Device types
- Carrier Ethernet switches, MSPP, optical leased-line systems, optical multiplexers, IoT (000E5A) — [Likely] https://www.netmanias.com/en/telefield/about/382/ ; contract-manufactured telecom/multimedia/healthcare/automotive/security electronics (6CA906) — [Likely] https://www.telefield.com.hk/en/
- Notable products
- none independently verified beyond category-level product lines — [Unknown]
- Industry
- Telecom/carrier networking equipment manufacturing (000E5A); electronics contract manufacturing / EMS-OEM (6CA906) — [Likely] cited above
- Historic prefix
- None found under either name (no MA-M, MA-S, or OUI-36 registrations) — [Confirmed] the IEEE MA-L registry
- No-IEEE-date note
- IEEE publishes no registration dates for MAC OUI assignments — [Confirmed]
- Special note
- the two registrants share only a name; do not conflate their products or history — [Confirmed] the IEEE MA-L registry
- Website
- https://www.telefield.com.hk/en/ (6CA906) — [Confirmed]; https://telefield.tradekorea.com/main.do (000E5A) — [Likely]
- Related vendors
- none identified — [Unknown]
- Security
- No CVE or malware association found in NVD or general web search as of a September 2026 search — [Likely]