Observed topology

AS23910 CNGI-CERNET2-AS-AP - China Next Generation Internet CERNET2

Unclassified APNIC

Upstreams 3 carry this network

Downstreams 35 this network carries

Adjacent (IPv4) 0

Adjacent (IPv6) 38

Upstream graph Who carries AS23910, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS23910 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS23910: 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.

AS	Network	Type	Families	Paths seen
AS23911	China Next Generation Internet Beijing IX	Unclassified	IPv6	145
AS4134	No.31,Jin-rong Street	Residential	IPv6	1
AS4538	China Education and Research Network Center	Education	IPv6	1

Transit

Downstream networks

All 35

Networks for which AS23910 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS24363	CERNET2 IX at Shandong University	Unclassified	IPv6	578
AS24360	CERNET2 IX at Zhengzhou University	Unclassified	IPv6	243
AS24361	CERNET2 IX at Southeast University	Unclassified	IPv6	195
AS24350	CERNET2 IX at Beijing University of Posts and Telecommunications	Unclassified	IPv6	167
AS24362	CERNET2 IX at University of Science and Technology of China	Unclassified	IPv6	155
AS24358	CERNET2 IX at Huazhong University of Science and Technology	Unclassified	IPv6	131
AS138182	CERNET2 regional IX at Hebei Normal University	Unclassified	IPv6	124
AS24355	CERNET2 IX at University of Electronic Science and Technology of China	Unclassified	IPv6	123
AS24353	CERNET2 IX at Xi'an Jiaotong University	Unclassified	IPv6	102
AS24371	CERNET2 IX at Jilin University	Unclassified	IPv6	99

All 35 downstreams →

Adjacency

Adjacent networks

All 38

Every AS seen directly next to AS23910 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS23911	China Next Generation Internet Beijing IX	Unclassified	IPv6	3,196
AS4538	China Education and Research Network Center	Education	IPv6	1,553
AS133111	CERNET New Technology Co., Ltd	Unclassified	IPv6	1,214
AS24363	CERNET2 IX at Shandong University	Unclassified	IPv6	578
AS4134	No.31,Jin-rong Street	Residential	IPv6	412
AS24348	CERNET2 IX at Tsinghua University	Unclassified	IPv6	280
AS24360	CERNET2 IX at Zhengzhou University	Unclassified	IPv6	243
AS133512	CERNET New Technology Co., Ltd	Unclassified	IPv6	213
AS24361	CERNET2 IX at Southeast University	Unclassified	IPv6	195
AS24350	CERNET2 IX at Beijing University of Posts and Telecommunications	Unclassified	IPv6	167

All 38 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-02 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.44M 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.