Tendyron Corporation (天地融科技股份有限公司) is a Beijing-based manufacturer of hardware PKI security tokens for retail banking, holding four MA-L OUI assignments: 10-D6-80, 88-13-C2, 38-95-92, and 10-5F-D4. Three of the four registry rows carry the address "Tendyron Building, Zhongguancun No.1 Park, Beiqing Road, Haidian District, Beijing"; the 38-95-92 row carries an earlier address, "1810, Tower B, Jin-ma Building, 17 East Qing Hua Road, Beijing 100083." The company is best known as a dominant supplier of USB hardware security tokens (USBkeys/eTokens) to Chinese banks — ICBC, Agricultural Bank of China, China Construction Bank, and China Merchants Bank among them — with a claimed installed base of roughly 140 million devices. Its product line covers 2G/3G USB tokens (with built-in LCD and HIP human-interactive-peripheral technology), Bluetooth PKI cards, and mobile PKI tokens that use audio-encoding (AEC) communication to pair with smartphones. The enrichment-relevant takeaway for OUI work: a Tendyron MAC seen on a network is almost certainly a Bluetooth-enabled banking authentication or digital-signature device (a Bluetooth PKI card or wireless token pairing with a PC or phone for online-banking 2FA), not a router, access point, or other network infrastructure. The product family is security-oriented by design — PKI certificate storage, PKCS#11/MS-CAPI compliance, X.509 support, and protection against MitM/Trojan transaction tampering — and Tendyron holds several US patents on cryptographic challenge-response and certificate-authentication schemes. No sanctions or supply-chain advisories were found in this research pass.
- IEEE assignment
- 4 prefixes (10-D6-80, 88-13-C2, 38-95-92, 10-5F-D4) → Tendyron Corporation [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv lines 415, 23386, 32069, 33093)
- Registry / block size
- all four are MA-L (24-bit OUI). No MA-M or MA-S assignments found in mam.csv or oui36.csv [Confirmed] — IEEE oui.csv (cached registry). NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" on third-party tools (maclookup.app etc.) is a database artifact, not an IEEE fact.
- HQ / country
- Beijing, China (CN). Three assignments list "Tendyron Building, Zhongguancun No.1 Park, Beiqing Road, Haidian District, Beijing 100000"; 38-95-92 lists the earlier "1810, Tower B, Jin-ma Building, 17 East Qing Hua Road, Beijing 100083" [Confirmed] — IEEE MA-L; maclookup.app (/vendors/tendyron-corporation, /macaddress/389592, /macaddress/105fd4)
- Chinese name
- 天地融科技股份有限公司 [Likely] — LinkedIn company page (single source; not independently corroborated)
- Company status
- active [Confirmed] — Crunchbase (crunchbase.com/organization/tendyron); maclookup.app. NOTE: vendor site http://www.tendyron.com returned ECONNREFUSED on 2026-06-19, so product/company details are drawn from cached search snippets, Crunchbase, LinkedIn, and USPTO records rather than a live site read.
- Device types
- USB PKI/OTP security tokens (2G/3G, with LCD + HIP), Bluetooth PKI cards, mobile PKI tokens (audio-encoding/AEC to smartphones), home bank-card readers, smartcards [Confirmed] — cached tendyron.com product pages (/en/product.html, /en/product/2gtoken.html, /en/product/mtoken.html); Crunchbase
- Industry
- financial-security / banking authentication hardware [Confirmed] — cached tendyron.com about pages; Crunchbase
- Notable customers
- ICBC, Agricultural Bank of China, China Construction Bank, China Merchants Bank; claimed ~140 million tokens deployed [Confirmed] — cached tendyron.com about pages (/en/about/dt-8836416015481.html and related)
- Security context
- devices are 2FA / digital-signature tokens (PKI cert storage, PKCS#11/MS-CAPI, X.509, MitM/Trojan protection); US patents held on challenge-response and certificate auth [Confirmed] — cached tendyron.com/en/product/2gtoken.html; USPTO patents 10063381, 9154480, 8874904, 10367642
- Analyst note
- A Tendyron OUI on a network indicates an end-user banking authentication device (almost always a Bluetooth PKI card or wireless USB token pairing with a PC/phone), NOT network infrastructure. The 4-block MA-L footprint (~67M addresses) is consistent with a high-volume token manufacturer.