asn.dev

Observed topology

AS133111 CNT-northChina - CERNET New Technology Co., Ltd

Unclassified APNIC

Upstreams 3 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 2
Adjacent (IPv6) 9
Upstream graph Who carries AS133111, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS133111 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS133111: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS4538China Education and Research Network CenterEducationIPv4176
AS23910China Next Generation Internet CERNET2UnclassifiedIPv689
AS9808China Mobile Communications Group Co., Ltd.MobileIPv426

Transit

Downstream networks

inferred

Networks for which AS133111 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS45090Shenzhen Tencent Computer Systems Company LimitedHostingIPv6637
AS59019Beijing Kingsoft Cloud Internet Technology Co., LtdUnclassifiedIPv6141
AS59078Yunify Technologies Inc.UnclassifiedIPv6114
AS3793615F,Ideal Plaza No.58 Bei Si Huan Xi RoadUnclassifiedIPv681
AS55641Changping District, BeijingUnclassifiedIPv662
AS17429BEIJING GEHUA CATV NETWORK CO.LTDUnclassifiedIPv635
AS1742821Vianet.Co.,LtdUnclassifiedIPv621
AS55990Huawei Cloud Service data centerHostingIPv617

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS133111 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS23910China Next Generation Internet CERNET2UnclassifiedIPv61,197
AS45090Shenzhen Tencent Computer Systems Company LimitedHostingIPv6637
AS4538China Education and Research Network CenterEducationIPv4176
AS59019Beijing Kingsoft Cloud Internet Technology Co., LtdUnclassifiedIPv6141
AS59078Yunify Technologies Inc.UnclassifiedIPv6114
AS3793615F,Ideal Plaza No.58 Bei Si Huan Xi RoadUnclassifiedIPv681
AS55641Changping District, BeijingUnclassifiedIPv662
AS17429BEIJING GEHUA CATV NETWORK CO.LTDUnclassifiedIPv635
AS9808China Mobile Communications Group Co., Ltd.MobileIPv426
AS1742821Vianet.Co.,LtdUnclassifiedIPv621

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. 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.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.