Dongguan Lingjie IOT Co., LTD — 70:89:F5 (MA-L)

The OUI prefix 70:89:F5 belongs to Dongguan Lingjie IOT Co., LTD, a consumer-peripheral manufacturer in Dongguan City, Guangdong Province, China. Despite the "IOT" in its registered name, the company is not a networking-infrastructure or general IoT vendor: its product line is computer input devices — wireless mice and keyboards using 2.4 GHz RF with nano USB receiver dongles, plus Bluetooth (3.0 and 5.0) variants. The entity behind the IEEE registration appears alongside a sibling name, "Dongguan Lingjie Electronics & Technology Co., Ltd.", in FCC filings (grantee codes 2AJYO and 2ANBU); the IOT-named legal entity is the one holding the OUI block, while the Electronics & Technology name appears on trade-show listings (CES 2025, IFA Berlin). The single registered block is an MA-L (24-bit OUI ≈ 16 million addresses). The practical relevance for asset classification: a 70:89:F5 address most likely identifies a low-cost wireless mouse, keyboard, or similar HID-class peripheral rather than network gear. No CVEs name this vendor directly, but the broader product class — 2.4 GHz keyboards/mice on proprietary, possibly unencrypted RF — falls under the documented MouseJack keystroke-injection risk class (Bastille Networks, 2016); whether any specific Lingjie product is affected has not been individually tested in public research. IEEE publishes no registration date for this or any OUI, so no allocated date is recorded; a third-party "first-seen" date of 2021-07-28 exists in lookup databases but is a database artifact, not an IEEE fact.

IEEE assignment

70:89:F5 → Dongguan Lingjie IOT Co., LTD [Confirmed] — IEEE MA-L (oui.csv line 817); also https://maclookup.app/vendors/dongguan-lingjie-iot-co-ltd, https://api.macvendors.com/70:89:F5

Registry / block size

MA-L (24-bit OUI; ≈16 million addresses); single block, not present in MA-M (mam.csv) or MA-S (oui36.csv) [Confirmed] — enrichment/registries/oui.csv. 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.

Registered address

A-708, Zhongke Innovation Plaza, Songshan Lake, Dongguan City, Dongguan, Guangdong, CN 523945 [Confirmed] — IEEE MA-L (oui.csv line 817)

HQ / country

China — Dongguan City, Guangdong Province (manufacturing in Xiegang Town, Dongguan) [Confirmed] — IEEE MA-L; https://lingjie.manufacturer.globalsources.com/homepage_6008843744056.htm

Allocated / registration date

Unknown (null) — IEEE publishes no OUI registration dates; third-party first-seen 2021-07-28 is a database artifact only [Confirmed that no IEEE date exists] — https://maclookup.app/vendors/dongguan-lingjie-iot-co-ltd

Sibling / alternate entity name

also appears as "Dongguan Lingjie Electronics & Technology Co., Ltd."; FCC grantee codes 2AJYO and 2ANBU [Confirmed] — https://www.cleancss.com/user-manuals/2AJYO, https://fccid.io/2ANBUI886

Device types

wireless mice and keyboards (2.4 GHz RF with nano USB dongle; Bluetooth 3.0/5.0 variants); OEM/ODM input devices — not switches, routers, or IoT infrastructure [Confirmed] — https://fccid.io/2ANBUIK6630/User-Manual/User-Manual-3574233, https://fccid.io/2ANBUI886/User-Manual/User-Manual-3685242, https://lingjie.manufacturer.globalsources.com/homepage_6008843744056.htm

Company background

founded ~2011 (one source cites 2008 for OEM/ODM operations); ISO 9001 + ISO 14001 certified; exhibited at CES 2025 and IFA Berlin [Likely — single-source figures] — https://lingjie.manufacturer.globalsources.com/homepage_6008843744056.htm, https://www.virtualmarket.ifa-berlin.com/en/DONGGUAN-LINGJIE-ELECTRONICS-TECHNOLOGY-CO-LTD,c397647

Vendor website

http://lyyggs.com (connection refused at research time; not reachable); Global Sources and Made-in-China storefronts active [Likely] — https://lingjie.manufacturer.globalsources.com/homepage_6008843744056.htm, https://www.made-in-china.com/showroom/joan112/

Security context

no vendor-specific CVEs found; product class (2.4 GHz HID RF) is subject to MouseJack-class keystroke-injection risk if RF is unencrypted; Bluetooth variants fall under the standard Bluetooth threat model (e.g., CVE-2023-45866 class). No evidence any Lingjie device was individually tested in MouseJack research [Likely — class-level inference, not device-tested] — https://bastille.net/research/vulnerabilities-mousejack/, https://sra.io/wp-content/uploads/2018/02/MouseJack-whitepaper-v1.1.pdf

Analyst note

a 70:89:F5 address most likely identifies a low-cost wireless mouse/keyboard or similar HID peripheral, not network infrastructure — the "IOT" in the registered name is a branding/entity choice, not an indicator of networking-hardware production.