Shenzhen Water World Information Co.,Ltd. — 3 prefixes (MA-L)

A MAC address beginning FC:B5:85, 64:42:12, or 5C:45:46 belongs to Shenzhen Water World Information Co.,Ltd., a Guangdong-registered electronics manufacturer whose most concretely verified product is an FCC-certified dual-band gigabit Wi-Fi router. All three IEEE MA-L blocks register to this exact legal entity, which is more substance than a bare single-OUI shell typically shows.

The company self-describes as "Water World Group," founded 2009, spanning mobile communications (a rugged phone brand called "Rongyue"), smart wearables, smart-home/IoT devices, and automotive electronics, with R&D centers in Shenzhen, Huizhou, Zunyi, Xiamen, and Quanzhou. Only the router line is independently corroborated; the rest is self-reported on the company's own site.

That router is the strongest external anchor: FCC ID 2BAII-AX3000, a "Wireless Dual Band Gigabit Router," granted 2024-01-17 under this same company name — a third-party-verifiable filing separate from the IEEE registry and the company's own marketing.

A data-quality trap worth flagging: two similarly-named but legally distinct registrants exist and must not be merged into this entry — "Shenzhen Water World Co.,Ltd." (a different legal entity, OUI 10:C3:4D, separate FCC grantee 2AYCN) and "Hong Kong Water World Technology Co. Limited" (OUI A4:D8:CA, Hong Kong address). Near-identical branding, different companies.

IEEE's public OUI data publishes no assignment date for any of the three prefixes; any "date registered" shown by third-party lookup tools is a database artifact, not an IEEE fact, and should never be attributed to IEEE. No CVE or vulnerability-database record was found tied to Water World, Waterworld, or Rongyue-branded hardware as of this research pass — an honest absence, not a clean bill of health.

IEEE assignment

3 prefixes (FC:B5:85, 64:42:12, 5C:45:46) → Shenzhen Water World Information Co.,Ltd. [Confirmed] — the IEEE MA-L registry (rows FCB585, 644212, 5C4546)

Registry / block size

MA-L (24-bit OUI) x3 under this entity; no MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) assignment found [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry (no match)

Registered addresses

FC:B5:85 & 5C:45:46 → 1F, Building 3, DexinChang Wisdom Park, No. 23, Heping Road, Qinghua Community, Longhua Subdistrict, Longhua District, Shenzhen, Guangdong, CN 518109; 64:42:12 → Room 201, No.26, Yifenghua Innovation Industrial Park, Xinshi Community, Dalang Subdistrict, Longhua District, Shenzhen, Guangdong, CN 518000

[Confirmed] — the IEEE MA-L registry (rows FCB585, 5C4546, 644212)

Cross-check

Wireshark the Wireshark manufacturer database DB lists all 3 prefixes under short name "WaterWorldIn" [Confirmed] — the Wireshark manufacturer database

Company status

active — branded corporate site describing itself as "Water World Group," founded 2009 (self-reported founding date) [Confirmed active site; founding date self-reported] — https://www.waterworld.com.cn/en

Device types

Wi-Fi router [Confirmed via FCC]; mobile phones (Rongyue brand), wearables, smart-home/IoT, automotive electronics [Likely, self-reported only] — https://fccid.io/2BAII-AX3000, https://www.waterworld.com.cn/en/category/12

Notable products

FCC ID 2BAII-AX3000, "Wireless Dual Band Gigabit Router," granted 2024-01-17 [Confirmed] — https://fccid.io/2BAII-AX3000

Registration date

Unknown per IEEE — the IEEE MA-L registry has no assignment-date field; maclookup.app shows per-prefix dates (5C:45:46 → 2025-09-26; 64:42:12 → 2021-08-18; FC:B5:85 → 2023-10-19) but these are third-party database artifacts, not IEEE facts [Confirmed absence (IEEE); Likely-only (third-party)] — the IEEE MA-L registry, https://maclookup.app/vendors/shenzhen-water-world-information-co-ltd

Security history

no CVE/NVD record found for Water World / Waterworld / Rongyue-branded hardware in this pass [Confirmed absence in this pass] — https://nvd.nist.gov/vuln/search

Distinct-entity caution

NOT "Shenzhen Water World Co.,Ltd." (OUI 10:C3:4D, FCC grantee 2AYCN) or "Hong Kong Water World Technology Co. Limited" (OUI A4:D8:CA) — similarly named, legally distinct registrants; do not merge findings [Confirmed] — the IEEE MA-L registry (rows 10C34D, A4D8CA)

Usage context

company self-describes supplying ODM/white-label hardware to major brands (e.g. Xiaomi, ByteDance, TCL, Konka, Skyworth, Hisense, Changhong, Panasonic, Midea) [Likely, self-reported, not independently verified] — https://www.waterworld.com.cn/en

Analyst note

three confirmed OUI assignments under one legal entity plus an independently-verifiable FCC filing (2BAII-AX3000) distinguish this from a bare single-OUI shell; only the router is third-party corroborated, so treat other self-reported product lines as company claims pending confirmation.