Shennan Circuits Co., Ltd. — 4 prefixes (3x MA-L, 1x MA-M)

A MAC address starting with 04:E8:92, 14:70:57, or C0:50:64 identifies hardware manufactured by Shennan Circuits Co., Ltd. (SCC), a Shenzhen, China-based printed-circuit-board and electronics-assembly manufacturer. SCC is a contract manufacturer rather than a branded end-device maker, so equipment built on its hardware typically ships under a client's own brand rather than SCC's name.

SCC was founded in 1984 and is headquartered in Shenzhen, Guangdong, with additional production bases in Wuxi and Nantong and subsidiary/sales offices in North America and Europe. Its core businesses are PCB manufacturing, IC packaging substrates, and PCB assembly (PCBA) — described on its own site as a "3-in-one" strategy — serving communications-equipment, medical-device, and general/high-end electronics clients.

IEEE registries list four separate assignments to SCC at the same Shenzhen address: three 24-bit MA-L blocks (04:E8:92, 14:70:57, C0:50:64) and one 28-bit MA-M sub-block (08:26:AE:50/28). Four independent assignments to one identifiable, decades-old manufacturer is enough registration substance to move this entry past a bare single-OUI registration.

The MA-M assignment sits inside 08:26:AE, an IEEE base sub-allocated in /28 slices to 15 registrants, 14 of them unrelated organizations. Only the 08:26:AE:50/28 slice belongs to SCC, and a MAC address elsewhere in 08:26:AE should not be attributed to Shennan Circuits.

No public source ties a specific device model or category to any of these four prefixes as of an August 2026 search, which is consistent with SCC building hardware for other companies' branded products. No CVE or malware association was found for Shennan Circuits in the NVD or general web search as of 2026-08-18.

Vendor

Shennan Circuits Co., Ltd. (SCC) — Shenzhen, Guangdong, China

Device class

Unknown — no public source ties these prefixes to a specific device model or category; SCC is a contract PCB/PCBA manufacturer

Registry classes

3x MA-L (24-bit): 04:E8:92, 14:70:57, C0:50:64; 1x MA-M (28-bit): 08:26:AE:50/28

Shared-base caveat

08:26:AE is sub-allocated in /28 slices to 15 registrants, 14 of them unrelated — only 08:26:AE:50/28 belongs to SCC

Security/malware association

None found in NVD or general web search as of 2026-08-18

IEEE assignment

3x MA-L (04:E8:92, 14:70:57, C0:50:64) + 1x MA-M (08:26:AE:50/28) → Shennan Circuits Co.,Ltd, registered Shenzhen, Guangdong, CN [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry

Registry / block size

3 MA-L (24-bit OUI) + 1 MA-M (28-bit sub-block within shared base 08:26:AE) [Confirmed] — the IEEE MA-L registry rows 04E892/147057/C05064; the IEEE MA-M registry row 0826AE5

HQ / country

Gao Qiao Industrial Park East, Longgang District, Shenzhen, Guangdong, CN 518117 [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry

Company status

active — founded 1984, production bases in Shenzhen/Wuxi/Nantong, sales offices in North America and Europe [Confirmed] — https://www.scc.com.cn/scc/en/gysn/index.html

Device types

Unknown — no public source attributes a specific device model or category to these prefixes; SCC's hardware typically ships under client brands [Confirmed as a genuine unknown] — web search, August 2026

Notable products

PCB manufacturing, IC packaging substrates, PCB assembly (PCBA) [Confirmed] — https://www.scc.com.cn/scc/en/gysn/index.html, https://www.pcbdirectory.com/manufacturer/profile/shennan-circuits-company-limited

Verified sample prefixes

04:E8:92, 14:70:57, C0:50:64 (MA-L); 08:26:AE:50/28 (MA-M) [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the Wireshark manufacturer database (short name "ShennanCircu")

Shared-base note

08:26:AE is an IEEE-allocated base sub-divided in /28 slices among 15 registrants, 14 of them unrelated organizations; only 08:26:AE:50/28 is Shennan Circuits' — a MAC elsewhere in 08:26:AE must not be attributed to this vendor [Confirmed] — the IEEE MA-M registry 0826AE5

Registration date

Unknown — IEEE's public OUI/MA-M data (the IEEE MA-L registry, the IEEE MA-M registry: Registry, Assignment, Organization Name, Organization Address) publishes no assignment/registration date [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry

Corporate registry status

Unconfirmed — a MarketScreener listing exists under "Shennan Circuit Company Limited" (CNE100003373) consistent with a publicly-traded entity, but the exchange/ticker was not independently confirmed [Unknown] — https://www.marketscreener.com/quote/stock/SHENNAN-CIRCUIT-COMPANY-L-46415199/company/

Security/malware association

None found — NVD keyword search for "Shennan Circuits" returned zero results as of 2026-08-18; no malware/botnet/trojan association found in general web search [Confirmed] — https://services.nvd.nist.gov/rest/json/cves/2.0?keywordSearch=Shennan%20Circuits

Related vendors

none identified beyond SCC itself [Unknown]

Analyst note

Four independent OUI assignments (3 MA-L + 1 MA-M) to the same identifiable, decades-old Shenzhen PCB/PCBA manufacturer meet the bar for vendor substance beyond a bare single-OUI registration — but the MA-M assignment is a shared-base sub-block (only 08:26:AE:50/28 is SCC's), and no device-type corroboration exists, consistent with SCC's role as a contract manufacturer whose end products ship under other companies' brands.