Shenzhen Kayan Electronics, Ltd. — 70:98:83 (MA-L)

The OUI prefix 70:98:83 is a single MA-L block assigned by the IEEE to "SHENZHEN KAYAN ELECTRONICS., LTD." (assignment hex 709883), registered to an address in Bao'an District, Shenzhen, China. Kayan is a Shenzhen-based original-design and original-equipment manufacturer (ODM/OEM) of wireless networking hardware — its own product material describes 4G/5G cellular routers, wireless access points, xDSL gateways, switches, and PON/optical-communication gear. This is a small, single-block vendor rather than a consolidated multi-OUI footprint, so one prefix maps cleanly to one organization. Two practical caveats apply. First, IEEE publishes no registration date for any OUI: the public oui.csv carries only Registry, Assignment, Organization Name, and Organization Address, so any "date registered" shown on third-party lookup tools is a database artifact, not an IEEE fact. Second, the brand collides with two unrelated record types. In the OUI registry itself, the rows that match a "kayan" text search at lines 21107 and 21350 are Korean addresses containing the street name "Kayang" — they belong to NCI System Co., Ltd. and NORTHDATA Co., Ltd., not to this vendor. Separately, AS151800 is registered under "Shenzhen City Kayan Technology Co., Ltd." but resolves in routing data to a Hong Kong entity with a near-empty customer cone; a link between the hardware OUI holder and that ASN holder is plausible on the shared Shenzhen brand name but is not formally confirmed. The vendor's site (kayanlink.com) currently serves over plain HTTP with an invalid TLS certificate — an operational-hygiene note, not a device vulnerability. No CVEs, CISA KEV entries, or named security advisories were found for Kayan devices as of June 2026; for this class of Shenzhen CPE/router ODM hardware, assess the specific firmware build rather than the brand.

IEEE assignment

70:98:83 (assignment hex 709883) → SHENZHEN KAYAN ELECTRONICS., LTD. [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 116)

Registry / block size

MA-L (24-bit OUI); single IEEE prefix (~16.7M addresses) [Confirmed] — enrichment/registries/oui.csv line 116. 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 tools is a database artifact, not an IEEE fact.

HQ / country

Room 1801B1, Hengfang Technology Building, No. 4008 Xinhu Road, Yongfeng Community, Bao'an District, Shenzhen, CN 518126 [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 116); corroborated by https://udger.com/resources/mac-address-vendor-detail?name=shenzhen_kayan_electronics-ltd

Company status

active [Likely] — http://kayanlink.com/ (official site reachable June 2026; served over plain HTTP, TLS certificate invalid)

Device types

4G/5G cellular routers, wireless access points (AP), xDSL gateways, switches, PON/optical-communication products; ODM/OEM model [Confirmed] — https://ijzt.china9.cn/component/jwpagefactory?view=page&id=NzcyMDM%3D&company_id=4127&site_id=4293&layout_id=9373 (company's own product/about material)

Notable products

4G/5G CPE routers and wireless APs (ODM/OEM)

Registration date

Unknown — IEEE publishes no OUI registration dates; a 2021 founding context appears in third-party material but is not an IEEE-sourced fact and is not relied on here [Unknown]

MA-M / MA-S cross-check

no match in mam.csv (MA-M) or oui36.csv (MA-S) for any "kayan" organization — this is an MA-L-only assignment [Confirmed] — enrichment/registries/mam.csv, enrichment/registries/oui36.csv (searched, no hit)

Data trap (brand collision in registry)

oui.csv rows matching "kayan" at lines 21107 and 21350 are Korean addresses containing the street name "Kayang" and belong to NCI System Co., Ltd. and NORTHDATA Co., Ltd. — NOT this vendor [Confirmed] — enrichment/registries/oui.csv lines 21107, 21350

Related entity (unconfirmed)

AS151800 registered under "Shenzhen City Kayan Technology Co., Ltd." resolves to "HONGKONG IHUASHU INTERNET TECHNOLOGY LIMITED" with a zero customer-cone and no documented transit (IP range 103.99.61.0/24 – 103.99.62.0/24); shared Shenzhen brand name makes a relationship plausible but it is not formally confirmed [Likely] — https://asrank.caida.org/asns/151800, https://www.abuseipdb.com/whois/103.99.62.183

Security context

no CVEs, CISA KEV entries, or named advisories found for Shenzhen Kayan Electronics or its devices as of June 2026 [Likely — absence of finding, not a clearance]

Analyst note

A 70:98:83 globally-administered address identifies genuine Kayan-manufactured hardware (often rebranded under an ODM/OEM client). For risk assessment, evaluate the individual firmware version — this segment of low-cost Shenzhen CPE/router hardware often runs modified OpenWrt or vendor firmware and may lack timely patching — not the brand alone.