asn.dev

Observed topology

AS4651 THAI-GATEWAY The Communications Authority of ThailandCAT

Unclassified APNIC

Upstreams 43 carry this network
Downstreams 36 this network carries
Adjacent (IPv4) 87
Adjacent (IPv6) 57
Upstream graph Who carries AS4651, and who carries them, drawn as a map up to the transit-free core. 13 exchanges Where AS4651 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 43

Networks observed carrying traffic for AS4651: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv61,202
AS1299Arelion Sweden ABTransitIPv4124
AS2914NTT America, Inc.TransitIPv4114
AS174Cogent Communications, LLCTransitIPv4 IPv6107
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv687
AS3491PCCW Global (HK) Ltd.TransitIPv456
AS24482SG.GSHostingIPv4 IPv638
AS38001NewMedia Express Pte LtdHostingIPv4 IPv638
AS2497Internet Initiative Japan Inc.UnclassifiedIPv437
AS3303Swisscom (Schweiz) AGResidentialIPv437

All 43 upstreams →

Transit

Downstream networks

All 36

Networks for which AS4651 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS23969TOT Public Company LimitedResidentialIPv4 IPv671,169
AS9931National Telecom Public Company LimitedResidentialIPv4 IPv645,252
AS131090National Telecom Public Company LimitedResidentialIPv4 IPv641,111
AS4618Internet Thailand Company LimitedResidentialIPv4 IPv612,868
AS4765Pacific Internet Pte LtdUnclassifiedIPv4 IPv612,311
AS9335National Telecom Public Company LimitedHostingIPv4 IPv67,897
AS23884Proen Corp Public Company Limited.HostingIPv4 IPv66,419
AS131293TOT Public Company LimitedHostingIPv4 IPv64,285
AS4621UNINET-THEducationIPv4 IPv63,176
AS38450Ministry of Infomation Communication TechnologyUnclassifiedIPv4 IPv61,755

All 36 downstreams →

Adjacency

Adjacent networks

All 94

Every AS seen directly next to AS4651 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6121,773
AS23969TOT Public Company LimitedResidentialIPv4 IPv673,646
AS9931National Telecom Public Company LimitedResidentialIPv4 IPv659,005
AS131090National Telecom Public Company LimitedResidentialIPv4 IPv641,111
AS4621UNINET-THEducationIPv4 IPv622,285
AS174Cogent Communications, LLCTransitIPv4 IPv616,443
AS4618Internet Thailand Company LimitedResidentialIPv4 IPv614,985
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv612,947
AS2914NTT America, Inc.TransitIPv4 IPv612,864
AS4765Pacific Internet Pte LtdUnclassifiedIPv4 IPv612,424

All 94 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-20 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.16M 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.