Shaanxi GuoLian Digital TV Technology Co.,Ltd. — 2 prefixes (MA-L)

A MAC address beginning C0:9C:04 or AC:D6:57 belongs to Shaanxi GuoLian Digital TV Technology Co.,Ltd., a Xi'an, Shaanxi-based cable and broadcast-network equipment maker, most plausibly seen on cable-TV/Ethernet access hardware rather than consumer or enterprise networking gear.

The company holds two direct IEEE MA-L assignments under an identical registrant name, filed from two different Xi'an addresses — evidence of an operating entity rather than a one-off shell registration. It was later acquired to full ownership by Shaanxi Broadcast & TV Network Intermediary (Group) Co., Ltd. in a 2015 transaction that bought out the remaining 49% stake from three other named shareholders, with disclosed 2014 financials (assets, revenue, and profit figures) confirming it was a real, financially substantive business at the time.

The only concrete product/device evidence found is a 2011-filed Chinese utility-model patent (CN202103692U) naming the company as assignee for an NGB (Next Generation Broadcasting) access-network integration platform — combining cable-TV and Ethernet signal delivery through optical-receiver, ONU, and EOC modules under one CPU. No source independently ties this patented device, or any other named product, to the two specific MAC prefixes, and no vendor-operated website or security/CVE history was found as of an August 2026 search.

Registered locations

Xi'an, Shaanxi Province, China (two distinct addresses across the two MA-L filings)

Prefixes

C0:9C:04, AC:D6:57 (both direct MA-L assignments, not a shared IEEE-held base)

Ownership

Subsidiary of Shaanxi Broadcast & TV Network Intermediary (Group) Co., Ltd. as of a 2015 buyout to 100% ownership

IEEE assignment

2 prefixes → Shaanxi GuoLian Digital TV Technology Co.,Ltd., registered Xi'an, Shaanxi, CN [Confirmed] — the IEEE MA-L registry (rows C09C04, ACD657)

Registry / block size

MA-L (24-bit OUI); 2 IEEE MA-L blocks confirmed for this registrant, none found in the IEEE MA-M registry or the IEEE MA-S registry [Confirmed] — the IEEE MA-L registry

HQ / country

Xi'an, Shaanxi Province, China. C0:9C:04 registered at No. 15, the first Gaoxin road, Hi-tech development district, Xi'an, Shaanxi, CN 710075; AC:D6:57 registered at Chief Building, Fifth Yannan Road, Qujiang New District, Xi'an, Shaanxi, CN 71000 — the differing addresses are consistent with the company relocating between the two filings

[Confirmed] — the IEEE MA-L registry

Registration date

Unknown — IEEE's public OUI registry publishes no per-block assignment/registration date; third-party lookup tools showing a date are database artifacts, not IEEE facts [Unknown] — the IEEE MA-L registry

Company status

Subsidiary — acquired to 100% ownership by Shaanxi Broadcast & TV Network Intermediary (Group) Co., Ltd. in a 2015 transaction buying out the remaining 49% from three other named shareholders (Xi'an HISU Multimedia Technology Co., Ltd.; Xi'an Jizhong Digital Communications Co., Ltd.; Unionman Technology Co., Ltd.), with 2014 disclosed financials of roughly CNY 173M total assets and CNY 154M revenue

[Confirmed] — marketscreener.com

Device types

Cable-TV/broadband access-network equipment; a 2011-filed patent describes an NGB integration platform combining cable-TV and Ethernet signal delivery via optical-receiver, ONU, and EOC modules [Likely] — Google Patents CN202103692U

Notable products

No specific named commercial product confirmed; the patent record is the only found product/technology evidence and is not independently tied to either MAC prefix [Unknown]

Verified sample prefixes

C0:9C:04, AC:D6:57 [Confirmed] — the IEEE MA-L registry, the Wireshark manufacturer database

Vendor website

None found in an August 2026 search [Unknown]

Security history

No CVEs, advisories, or botnet/default-credential reports found tied to this vendor, its registrant name, or either prefix as of an August 2026 search [Unknown]

Shared-base check

Neither C0:9C:04 nor AC:D6:57 is a shared IEEE-held base (e.g. 70:B3:D5, 8C:1F:64); both are registered directly and solely to this vendor [Confirmed] — the IEEE MA-L registry

Analyst note

Both prefixes are direct, non-shared MA-L assignments, so a MAC starting C0:9C:04 or AC:D6:57 reliably indicates hardware from this vendor's lineage; the specific commercial product line is not independently confirmed beyond the patented NGB access-platform concept.