Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd — 7 prefixes (MA-L)

Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd holds seven MA-L (24-bit OUI) blocks in the IEEE registry: 00:16:6D, 18:DC:56, 3C:91:57, 54:DC:1D, 78:36:90, D0:37:42, and EC:5A:86. Yulong is the founding legal entity behind the Coolpad smartphone brand and is a subsidiary of Coolpad Group Limited (HKEX: 2369). The company was incorporated in Shenzhen in 1993, began with pagers and paging systems, and moved into mobile phones in 2002; the parent later adopted the Coolpad Group name in 2013. The registered blocks are consumer mobile-phone hardware (Coolpad-brand smartphones and feature phones), not networking infrastructure — no routers, Wi-Fi access points, or other network equipment were corroborated under this entity. The registry addresses span several Coolpad manufacturing and office sites across Shenzhen, Dongguan, and Hangzhou. As with all IEEE OUI data, no registration or assignment date is published, so none is recorded here; any "date registered" figure on third-party MAC-lookup tools is a database artifact, not an IEEE fact. A globally-administered address from one of these seven blocks reliably identifies genuine Coolpad/Yulong hardware for asset classification, but modern phones may present randomized Wi-Fi MACs that do not resolve to this vendor.

IEEE assignment

7 prefixes → Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd, registered CN [Confirmed] — IEEE MA-L

Registry / block size

MA-L only (24-bit OUI); 7 prefixes. Zero MA-M (the IEEE MA-M registry) and zero MA-S (the IEEE MA-S registry) assignments exist for this exact organization name [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry

Verified prefixes (all MA-L)

00:16:6D, 18:DC:56, 3C:91:57, 54:DC:1D, 78:36:90, D0:37:42, EC:5A:86 [Confirmed] — the IEEE MA-L registry

HQ / country

China (CN). Registry addresses span multiple sites: 8/F High Tech Plaza, TianAn Cyberpark, Chegongmiao, Shenzhen 518040 (00:16:6D, 18:DC:56); Coolpad Information Harbor, 2nd Mengxi Rd, Hi-Tech Industrial Park (North), Nanshan District, Shenzhen 518057 (D0:37:42); Road No.2, West of Industrial Park, Dongguan 518057 (EC:5A:86, 78:36:90, 54:DC:1D); 5F Building 2, No.56 Liuhe Rd, Xihu District, Hangzhou 310023 (3C:91:57)

[Confirmed] — the IEEE MA-L registry

Corporate identity

founding legal entity of the Coolpad brand; subsidiary of Coolpad Group Limited (HKEX: 2369); incorporated Shenzhen 1993 [Confirmed] — https://en.wikipedia.org/wiki/Coolpad

Company status

active [Likely] — https://en.wikipedia.org/wiki/Coolpad (parent Coolpad Group listed on HKEX; entity-level current status not independently fetched from an official corporate domain in this pass)

Device types

consumer mobile phones — Coolpad-brand smartphones and feature phones; originally pagers/paging systems (early 1990s), mobile phones from 2002 [Confirmed] — https://en.wikipedia.org/wiki/Coolpad

Networking equipment

none corroborated. No routers, Wi-Fi APs, or network infrastructure found under this entity [Likely — absence-of-evidence from one light web pass] — https://en.wikipedia.org/wiki/Coolpad

Registration dates

Unknown / not applicable. IEEE publishes no OUI registration or assignment date in the IEEE MA-L registry; none recorded. Any third-party "date registered" figure is a database artifact, not an IEEE fact [Confirmed] — the IEEE MA-L registry

Related vendors

Coolpad Group Limited (parent) [Confirmed] — https://en.wikipedia.org/wiki/Coolpad

Security context

no vendor-specific CVEs, advisories, or rogue-device reports found for this OUI/vendor in this light pass [Unknown — not found, not an assertion of absence]

False-positive note

the IEEE MA-M registry (MA-M) entries "Silicon Dynamic Networks" and "HENAN FOXSTAR DIGITAL DISPLAY Co.,Ltd." carry addresses with a coincidental "Yulong Road"/"Yulong Block" substring, and the IEEE MA-L registry holds many "Realme Chongqing Mobile Telecommunications Corp.,Ltd." rows with a "Yulong Avenue" address — all unrelated, excluded by requiring an exact "yulong computer" org-name match

[Confirmed] — the IEEE MA-M registry, the IEEE MA-L registry

Analyst note

a globally-administered address from these 7 blocks = genuine Yulong/Coolpad hardware; absence doesn't mean "not Yulong" (modern phones use randomized Wi-Fi MACs). Don't rely on OUI alone for inventory or MAC-based access control.