Bluebank Communication Technology Co., Ltd. — 2 prefixes (MA-L)

A MAC address beginning 3C:B8:D6 or A4:A4:D3 belongs to Bluebank Communication Technology Co., Ltd., a Chongqing, China-based ODM/engineering-services manufacturer, and is typically seen on mobile handsets or wearable/IoT hardware rather than networking equipment.

The IEEE MA-L registry lists two confirmed blocks for this registrant: 3C:B8:D6 (No. 6, Chanyi Road, Yubei District, Chongqing 401120, CN) and A4:A4:D3 (No.13-2, Jiang Ying Road, Chongqing 401336, CN). The organization name is spelled slightly differently across the two rows — "Bluebank Communication Technology Co.,Ltd." vs "Co.Ltd" — punctuation only, same registrant.

This clears the bar for a substantive vendor entry, not a bare shell. The A4:A4:D3 registry address matches the company's own listed HQ address on its official site (bluebank.com.cn) verbatim, and an active FCC grantee code (2AFK7) covers at least three certified smartphone models — VP4501I, VP5001I, and PCB-I316 — directly tying the OUI registrant to real, currently-shipping hardware.

Third-party business-directory coverage (Global Sources, Craft.co) consistently describes a Chongqing ODM/engineering-services manufacturer, reportedly founded October 2013, with R&D centers in Beijing and Shanghai and a sales center in Shenzhen, producing feature phones, 5G smartphones, walkie-talkies, wearables, and AR/VR or IoT modules. No networking-infrastructure product line was found under this registrant.

Neither prefix is one of the ~428 shared IEEE-administered bases (e.g. 70:B3:D5, 8C:1F:64); both are ordinary dedicated MA-L blocks, so no sub-allocation caveat applies. IEEE's public the IEEE MA-L registry publishes no assignment/registration date for either block — any third-party "date registered" is a database artifact, not an IEEE fact. No CVE, vulnerability disclosure, or malware association referencing the company was found as of an August 2026 search.

IEEE assignment

3C:B8:D6, A4:A4:D3 → Bluebank Communication Technology Co., Ltd., registered Chongqing, China [Confirmed] — the IEEE MA-L registry 3CB8D6, the IEEE MA-L registry A4A4D3

Registry / block size

MA-L (24-bit OUI); 2 confirmed blocks, no MA-M/MA-S rows found for this registrant [Confirmed] — the IEEE MA-L registry (searched, no additional match); the IEEE MA-M registry (searched, no match); the IEEE MA-S registry (searched, no match)

HQ / country

No.13-2, Jiang Ying Road, Nan An District, Chongqing, CN (registry address for A4:A4:D3 matches company's own listed HQ address) [Confirmed] — the IEEE MA-L registry A4A4D3, http://www.bluebank.com.cn/about

Company status

active — operating official website, active FCC grantee code with recent certified filings [Confirmed] — http://www.bluebank.com.cn/about, https://fccid.io/2AFK7

Device types

mobile handsets, wearables, IoT/AR-VR terminals and accessories; NOT networking infrastructure [Confirmed] — https://www.globalsources.com/bluebank-communication/homepage_6008859211396.htm, https://fccid.io/2AFK7-VP4501I, https://fccid.io/2AFK7-VP5001I, https://fccid.io/2AFK7-PCB-I316

Notable products

FCC-certified smartphone models VP4501I, VP5001I, PCB-I316 [Confirmed] — https://fccid.io/2AFK7

Company founded / structure

founded October 2013; HQ Chongqing with R&D in Beijing and Shanghai, sales center in Shenzhen; privately held ODM/engineering-services manufacturer, roughly 200-500 employees depending on source [Likely] — http://www.bluebank.com.cn/about, https://craft.co/bluebank-communication-technology

Registration dates

not published by IEEE for either block; maclookup.app "Last Updated" timestamps (2025-04-29 for 3C:B8:D6, 2015-11-17 for A4:A4:D3) are third-party database-refresh artifacts, not IEEE facts [Confirmed] — https://api.maclookup.app/v2/macs/3C:B8:D6, https://api.maclookup.app/v2/macs/A4:A4:D3

Security notes

no CVE, vulnerability disclosure, or malware/abuse association found as of an August 2026 search [Unknown / negative] — (general web/CVE search, no hits)

Shared-base check

neither prefix is an IEEE Registration Authority shared base; both are ordinary dedicated MA-L blocks [Confirmed] — the IEEE MA-L registry 3CB8D6, the IEEE MA-L registry A4A4D3

Related vendors

none identified

Analyst note

two independently-registered MA-L blocks under the same registrant, a matching HQ address, and an active FCC grantee code together indicate a genuine, currently-operating manufacturer rather than a shell registration; device context is consumer mobile/wearable hardware, not networking gear.