China Unicom

China Unicom operates Autonomous System 4837, the backbone of one of China's three major state-owned telecom operators. Registered in China, it provides fixed-line broadband, 5G mobile, and internet transit both domestically and internationally. The network serves a vast subscriber base and interconnects with global carriers at China's international gateways. As a large eyeball and transit network, AS4837 is a frequently observed origin and path in traffic involving Chinese users and services. Lookups on its addresses typically resolve to China Unicom subscribers or infrastructure inside China.