Shenzhen JingHanDa Electronics — 3 MA-L blocks + 1 MA-M sub-block

A MAC address beginning with DC:64:B8, C0:48:FB, or AC:4E:2E belongs to Shenzhen JingHanDa Electronics Co.,Ltd, a Guangdong-based manufacturer whose product line includes LCD/LCM display modules and Bluetooth/GPRS mobile payment card readers. A fourth registration, the MA-M sub-block 88:5D:90:50/28, is also JingHanDa's — but only that narrow slice, not the wider 88:5D:90 base it sits inside.

That base, 88:5D:90, is a shared IEEE allocation: the local registry extract shows roughly 15 unrelated registrants sub-allocated beneath it, including Wuhan Strong Electronics and CPAC Systems. A device presenting a MAC merely starting 88:5D:90 is not identifiable as JingHanDa hardware; only an address in the 88:5D:90:5X range is.

JingHanDa's own footprint goes beyond a bare OUI registration. Independent trade-directory listings (GlobalSources, Volza, listofcompaniesin.com) describe a Shenzhen company founded in 1997 with roughly 100-149 employees, manufacturing LCD/LCM modules and a family of networked payment terminals — iSwipe, i21/i21B, SmartPad, i30+, and MediaPad — the kind of Bluetooth/GPRS hardware that would need a MAC-bearing radio module, unlike the LCD modules alone.

No vendor-specific security advisory or CVE was found for JingHanDa hardware. Generic weaknesses in magnetic-stripe and offline-EMV payment protocols are documented in the broader industry literature, but nothing ties them specifically to this vendor's implementation.

IEEE assignments

4 distinct registrations → Shenzhen JingHanDa Electronics Co.,Ltd, same org name/address on all four [Confirmed] — the IEEE MA-L registry DC64B8, the IEEE MA-L registry C048FB, the IEEE MA-L registry AC4E2E, the IEEE MA-M registry 885D905

Registry classes

MA-L (DC:64:B8, C0:48:FB, AC:4E:2E — full /24 each); MA-M (88:5D:90:50/28 — /28 sub-block) [Confirmed] — the IEEE MA-L registry DC64B8/C048FB/AC4E2E, the IEEE MA-M registry 885D905

Registered address

5th Floor, No 4, Road 1, ShangXue Technology Industrial Park, Longgang District, Shenzhen, Guangdong, China, 518129 [Confirmed] — the IEEE MA-M registry 885D905, the IEEE MA-L registry DC64B8/C048FB/AC4E2E

Country

China (CN) [Confirmed] — the IEEE MA-M registry 885D905

Shared-base caveat

88:5D:90 is an IEEE-administered base with ~15+ unrelated registrants beneath it in the local the IEEE MA-M registry extract (e.g. Wuhan Strong Electronics at 885D904, CPAC Systems at 885D903, Hexaglobe at 885D90D); only the 885D905 (88:5D:90:50/28) slice belongs to JingHanDa

[Confirmed] — the IEEE MA-M registry extract (keys 885D903, 885D904, 885D905, 885D90D)

Company profile

founded 1997, Shenzhen, China; 100-149 employees [Likely] — globalsources.com manufacturer profile

Product lines

LCD/LCM display modules (original business) and mobile payment card readers (MSR/EMV, Bluetooth/GPRS: iSwipe, i21/i21B, SmartPad, i30+, MediaPad) [Likely] — globalsources.com manufacturer profile

Third-party corroboration

same company/city/category independently listed in trade directories [Confirmed existence of listings; content not independently re-verified beyond name/address match] — volza.com company profile, listofcompaniesin.com listing

Website

jhdlcd.com.cn resolves under the company name, but page content could not be verified (WebFetch failed on a self-signed TLS certificate) [Unknown] — http://www.jhdlcd.com.cn (domain only)

Registration dates

not published by IEEE for any of the 4 blocks; no third-party date scraper consulted [Confirmed absence in source] — the IEEE MA-L registry/mam.csv column set (Registry, Assignment, Organization Name, Organization Address only)

Vendor-specific security history

no CVE or advisory found; only category-level MSR/EMV protocol weaknesses documented in general literature, not attributed to this vendor's implementation [Unknown / no vendor-specific finding] — securityboulevard.com EMV analysis, arxiv.org 2504.12812

Org status (active/inactive)

not explicitly stated by any source consulted [Unknown]