CIG Shanghai Co Ltd — 24 prefixes (MA-L)

CIG Shanghai Co Ltd holds 24 IEEE MA-L (classic 24-bit) OUI assignments, all registered to the identical name and address — 5th Floor, Building 8, No 2388 Chenhang Road, Shanghai, CN 201114 — confirming a single consolidated registrant rather than a collection of unrelated shell entries. "CIG" is the working identity of Cambridge Industries Group, a Shanghai Stock Exchange-listed (603083) ODM/JDM/OEM networking-hardware manufacturer founded 2005, headquartered in Shanghai with a Silicon Valley R&D/sales presence. The company's public product catalog spans routers and gateways, Wi-Fi 6/6E mesh access points, PON/wired access equipment, carrier-grade Ethernet switches, LTE/5G small cells, edge-computing/IoT gear, and optical transceivers. A concrete, independently verifiable consumer product line exists: the WF-810/WF-810B/WF-810E "Home Mesh Wireless" family (marketed as an OpenSync WiFi DeskPod), FCC-certified under grantee code SFK (FCC ID SFK-WF810), and managed through the Plume Cloud / OpenSync CPE-management platform — a typical arrangement for ISP-distributed mesh gateway hardware. Twenty-four separate OUI blocks under one registrant, tied to a real, publicly traded, product-shipping manufacturer, places this well beyond a bare single-OUI shell registration and supports treating it as a substantive consolidated vendor entry.

Organization name

CIG SHANGHAI CO LTD [Confirmed] — the IEEE MA-L registry (24 matching MA-L rows)

Registry class

MA-L (24-bit OUI); no MA-M or MA-S (oui36) entries found for this registrant [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry

Registered address

5th Floor, Building 8, No 2388 Chenhang Road, Shanghai, CN 201114 (identical across all 24 rows) [Confirmed] — the IEEE MA-L registry

OUI count

24 [Confirmed] — the IEEE MA-L registry (grep count); cross-checked against mac/vendor/cig-shanghai/index.html which states "24 IEEE OUI assignments"

Prefixes

540463, A0EEEE, CC0C9C, E48E10, 04B6BE, 34B5A3, A4817A, EC84B4, 00C896, 5C18DD, 0C8247, 3426E6, 181454, 30600A, FCB2D6, CCCF83, 605747, F40B9F, A08966, 502F54, 7C9F07, 94F717, C051F3, 04D688 [Confirmed] — the IEEE MA-L registry (24 lines)

Allocated date

Unknown — IEEE's public MA-L registry (the IEEE MA-L registry) carries no assignment/registration date field for any entry; do not fabricate one [Confirmed absence of data]

IANA reference

not applicable (blank) — IANA RFC references apply to protocol/port assignments, a different registry namespace than IEEE MAC OUI assignments [Confirmed]

Corporate identity

"CIG" resolves to Cambridge Industries Group, Shanghai Stock Exchange-listed (603083), ODM/JDM/OEM networking-hardware manufacturer, founded 2005 [Confirmed] — https://finance.yahoo.com/quote/603083.SS/profile/, https://wifinowglobal.com/organisation/cig/

Device/product context

Wi-Fi 6/6E mesh gateways (WF-810 family), routers/gateways, PON/wired access, carrier Ethernet switches, LTE/5G small cells, edge/IoT gear, optical transceivers; the WF-810 line is FCC-certified (FCC ID SFK-WF810) and Plume Cloud/OpenSync-managed [Confirmed for WF-810 line; broader catalog Likely] — https://fcc.report/FCC-ID/SFK-WF810/5951141.pdf, https://device.report/cig-shanghai/WF-810, https://www.opensync.io/cpe/cig/wf-810b

Security context

no vendor-specific CVEs or abuse/botnet reporting found; device class (cloud-managed ISP CPE, WPA/WPA2/WPA3) carries the standard remote-management attack surface of that category, not a documented incident [Likely — absence of evidence, not evidence of absence] — https://www.opensync.io/cpe/cig/wf-810b

Third-party date artifact (excluded)

maclookup.app surfaces a "registered 02 June 2018" style date for this vendor; this is a third-party database/index timestamp, not an IEEE fact, and is excluded from the JSON per no-fabrication rule [Confirmed exclusion] — https://maclookup.app/vendors/cig-shanghai-co-ltd

Substance verdict

24 OUI assignments + identifiable, publicly traded, product-shipping manufacturer with an FCC-certified consumer device line — qualifies as a substantive vendor, not a bare shell [Confirmed]