asn.dev

Observed topology

AS23764 CTGNET CTGNet

Unclassified APNIC NSP

Upstreams 55 carry this network
Downstreams 179 this network carries
Adjacent (IPv4) 273
Adjacent (IPv6) 117
Upstream graph Who carries AS23764, and who carries them, drawn as a map up to the transit-free core. 40 exchanges Where AS23764 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 55

Networks observed carrying traffic for AS23764: 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
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,972
AS6939Hurricane Electric LLCTransitIPv4 IPv61,707
AS1299Arelion Sweden ABTransitIPv4 IPv6869
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6737
AS2914NTT America, Inc.TransitIPv4445
AS174Cogent Communications, LLCTransitIPv4 IPv6337
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6240
AS24482SG.GSHostingIPv4 IPv6210
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv6202
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv6198

All 55 upstreams →

Transit

Downstream networks

All 179

Networks for which AS23764 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS45899VNPT CorpMobileIPv4 IPv680,819
AS4538China Education and Research Network CenterEducationIPv437,161
AS4809China Telecom Next Generation Carrier NetworkUnclassifiedIPv4 IPv68,499
AS4800PT Aplikanusa LintasartaHostingIPv4 IPv67,711
AS9198JSC KazakhtelecomUnclassifiedIPv47,212
AS24757Ethio TelecomUnclassifiedIPv4 IPv64,568
AS18403FPT Telecom CompanyResidentialIPv43,672
AS4134No.31,Jin-rong StreetResidentialIPv4 IPv63,415
AS38623ISP/IXP IN CAMBODIA WITH THE BEST VERVICE IN THERE.UnclassifiedIPv4 IPv63,244
AS9541Cyber Internet Services (Pvt) Ltd.HostingIPv4 IPv62,872

All 179 downstreams →

Adjacency

Adjacent networks

All 293

Every AS seen directly next to AS23764 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS45899VNPT CorpMobileIPv4 IPv6118,339
AS55720Gigabit Hosting Sdn BhdHostingIPv459,646
AS4134No.31,Jin-rong StreetResidentialIPv4 IPv654,751
AS3356Level 3 Parent, LLCTransitIPv4 IPv648,190
AS4538China Education and Research Network CenterEducationIPv437,161
AS6939Hurricane Electric LLCTransitIPv4 IPv634,006
AS31133PJSC MegaFonMobileIPv4 IPv631,538
AS38158PT. Cyberindo AditamaUnclassifiedIPv4 IPv624,308
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv622,855
AS4800PT Aplikanusa LintasartaHostingIPv4 IPv621,125

All 293 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-11 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.47M 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.