Adjacent networks
AS17621 CNCGROUP-SH China Unicom Shanghai network
Unclassified APNIC
Adjacency
Adjacent networks
Every AS seen directly next to AS17621 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS4837 | CHINA UNICOM China169 Backbone | Mobile | IPv4 IPv6 | 35,499 |
| AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | Hosting | IPv4 IPv6 | 2,123 |
| AS23853 | Shanghai Data Solution Co., Ltd. | Unclassified | IPv4 IPv6 | 862 |
| AS9929 | CHINA UNICOM Industrial Internet Backbone | Unclassified | IPv4 IPv6 | 559 |
| AS59083 | Shanghai Kuanhui Tech. Co.,ltd | Unclassified | IPv4 | 436 |
| AS9809 | SHENZHEN NOVA TECHNOLOGIES DEVELOPMENT.,LTD. | Unclassified | IPv4 | 398 |
| AS146842 | ChinaDataCom Corporation Limited | Unclassified | IPv4 | 284 |
| AS45079 | GDS CHANGAN SERVICES Ltd. | Unclassified | IPv4 IPv6 | 215 |
| AS10212 | China Enterprise ICT Solutions Limited | Unclassified | IPv4 | 177 |
| AS109 | CISCO SYSTEMS, INC. | Unclassified | IPv4 | 139 |
| AS17775 | shanghai science and technology network communication limited company | Unclassified | IPv4 | 132 |
| AS24141 | Shanghai DMT Information Network cor.,LTD. | Unclassified | IPv4 | 126 |
| AS37965 | Pacnet Business Solutions LTD | Unclassified | IPv4 | 125 |
| AS137759 | MTS SYSTEM (China) Co.,Ltd | Unclassified | IPv4 | 118 |
| AS56006 | Shanghai Pudong Development Bank Co.,Ltd. | Unclassified | IPv4 IPv6 | 87 |
| AS139148 | China UnionPay Co., Ltd | Unclassified | IPv4 IPv6 | 81 |
| AS10100 | UBS Group AG | Unclassified | IPv4 IPv6 | 69 |
| AS63570 | China Internet Network Information Center | Unclassified | IPv4 IPv6 | 69 |
| AS58850 | Bloomberg Financial Information (Beijing) Co Ltd | Unclassified | IPv4 | 57 |
| AS7609 | Morgan Stanley Management Service (Shanghai) Limited | Unclassified | IPv4 | 54 |
| AS137758 | Industrial and Commercial Bank of China Limited,ICBC | Unclassified | IPv6 | 42 |
| AS38375 | GSGH security LLC | Unclassified | IPv4 | 32 |
| AS56013 | SAMSUNG SDS CHINA | Unclassified | IPv4 | 22 |
| AS59019 | Beijing Kingsoft Cloud Internet Technology Co., Ltd | Unclassified | IPv4 IPv6 | 20 |
| AS139138 | Gopay Information Technology Co.,Ltd | Unclassified | IPv6 | 17 |
| AS151247 | HSBC Software Development (Guangdong) Limited Shanghai Branch | Unclassified | IPv4 | 17 |
| AS55992 | Beijing Qihu Technology Company Limited | Unclassified | IPv4 | 16 |
| AS38381 | west wing no.157,dongsi west street Dongcheng, Beijing, China | Unclassified | IPv4 | 15 |
| AS137746 | China Internet Network Information Center | Unclassified | IPv4 | 15 |
| AS17739 | Shanghai Telecom Haplink Network Co., Ltd | Unclassified | IPv4 | 13 |
| AS135432 | Visa Information Technology Beijing Co. Ltd. | Unclassified | IPv4 | 12 |
| AS18244 | Stateline Internet Data Center Co., Ltd. Shanghai | Unclassified | IPv4 | 10 |
| AS45061 | Shanghai Information Network Co.,Ltd. | Unclassified | IPv4 | 9 |
| AS59078 | Yunify Technologies Inc. | Unclassified | IPv4 IPv6 | 7 |
| AS139184 | China Central Depository & Clearing Co., Ltd. | Unclassified | IPv4 IPv6 | 6 |
| AS63538 | Accenture (China) Co.,Ltd | Unclassified | IPv4 | 5 |
| AS63641 | Mega Vantage Information Consulting Co., Ltd. | Unclassified | IPv4 | 5 |
| AS45110 | Beijing Tian Wei Xin Tong technology corp. limited. | Unclassified | IPv4 | 4 |
| AS45073 | CNNIC ASN block | Unclassified | IPv4 | 3 |
| AS58593 | Shanghai Blue Cloud Technology Co.,Ltd | Unclassified | IPv6 | 3 |
| AS137715 | GTJA Securities | Unclassified | IPv4 | 3 |
| AS55996 | CYPRESS TELECOM (CHINA) LIMITED | Unclassified | IPv4 | 2 |
| AS63603 | GSS China | Unclassified | IPv4 | 2 |
| AS63689 | Esun Technology(Shanghai) Co.,Ltd | Unclassified | IPv4 | 1 |
| AS137782 | STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY | Unclassified | IPv4 | 1 |
| AS139179 | China Pacific Insurance (Group) Co.,Ltd. | Unclassified | IPv4 | 1 |
| AS151313 | Pacific Insurance Technology Co., Ltd | Unclassified | IPv4 | 1 |
Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.
Derived from routing tables collected at 2026-10-17 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.18M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.