Sichuan Jiuzhou Electronic Technology Co., Ltd. — 4 prefixes (MA-L)

A MAC address beginning 7C:52:59 or 0C:49:33 belongs to Sichuan Jiuzhou Electronic Technology Co., Ltd., a Chinese manufacturer of CATV (cable television) and fiber-optic transmission equipment. It is typically seen on digital TV headend gear, EPON passive-optical-network equipment, RF amplifiers, or TV modulators rather than on consumer phones, laptops, or Wi-Fi routers.

The company is not a bare single-OUI shell registration. IEEE's public MA-L registry confirms four OUI blocks registered to this company at the same Mianyang City, Sichuan Province address: 7C:52:59, 0C:49:33, and 28:5B:0C under the registrant string "Sichuan Jiuzhou Electronic Technology Co., Ltd.", and 00:23:B8 under a punctuation variant of the same name, "Sichuan Jiuzhou Electronic Technology Co.,Ltd" (no comma before "Ltd", no space) — the same company, same address, a registry-formatting variant rather than a separate or doubtful registrant. Four is the confirmed count, not a floor — a pattern consistent with an active hardware manufacturer, not a one-off registrant.

The vendor's own site (jiuzhoutech.com) describes its business as R&D and manufacture of CATV equipment: digital TV headend systems, fiber-optic transmission gear, EPON equipment, RF amplifiers, TV modulators, and RF/optical test devices. This corroborates the "CATV/telecom infrastructure" device class independent of the OUI registry itself, though no single labeled device teardown was found tying a specific model to a specific prefix.

Sichuan Jiuzhou Electronic Technology is tied to the larger Sichuan Jiuzhou Investment Holding Group, active in China's electronic-information and CATV industry since 1958. No CVEs or security advisories were found naming this company specifically. A 2025 CISA advisory (AA25-239A) on Chinese state-sponsored network compromise names two unrelated, similarly-named Sichuan entities (Sichuan Juxinhe Network Technology and Sichuan Zhixin Ruijie Network Technology) — these are distinct companies and must not be conflated with this OUI holder.

IEEE assignment

7C:52:59, 0C:49:33, 28:5B:0C, 00:23:B8 (the last under a punctuation-variant registrant string, "Sichuan Jiuzhou Electronic Technology Co.,Ltd") → Sichuan Jiuzhou Electronic Technology Co., Ltd., registered Mianyang City, Sichuan Province, CN

[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv (IEEE MA-L)

Registry / block size

MA-L (24-bit OUI); 4 IEEE prefixes identified across this pass [Confirmed] — IEEE MA-L

HQ / country

No. 259, Jiuzhou Road, Mianyang City, Sichuan Province, CN 621000 [Confirmed] — IEEE MA-L

Company status

active (operating corporate website, product catalog) [Likely] — https://www.jiuzhoutech.com/english/html/about_us.htm

Device types

digital TV headend equipment, fiber-optic transmission equipment, EPON system equipment, RF amplifiers, TV modulators, RF/optical test devices [Likely] — https://www.jiuzhoutech.com/english/html/about_us.htm

Notable products

CATV headend and EPON transmission systems (no specific end-user model confirmed against a prefix) [Unknown]

Registration date

Unknown — IEEE publishes no assignment/registration dates in its public OUI registry; any "date registered" shown by third-party MAC-lookup tools is a database artifact, not an IEEE fact [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Related vendors

Sichuan Jiuzhou Investment Holding Group (parent, electronic-information/CATV industry since 1958) [Likely] — https://www.jiuzhoutech.com/english/html/about_us.htm

Security note

No company-specific CVEs/advisories found; a 2025 CISA advisory (AA25-239A) names unrelated, similarly-named Sichuan entities — not this vendor [Confirmed] — https://www.cisa.gov/news-events/cybersecurity-advisories/aa25-239a

Analyst note

Multi-OUI CATV/telecom-infrastructure manufacturer, not a bare shell registration; device context is corroborated by the vendor's own product catalog but no individual consumer-facing device model has been tied to a specific prefix.