asn.dev

Observed topology

AS4651 NTPCL-AS-AP - National Telecom Public Company Limited

Unclassified APNIC NSP

Upstreams 42 carry this network
Downstreams 36 this network carries
Adjacent (IPv4) 87
Adjacent (IPv6) 56
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 42

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 IPv61,205
AS2914NTT America, Inc.TransitIPv4 IPv6129
AS1299Arelion Sweden ABTransitIPv4116
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv687
AS174Cogent Communications, LLCTransitIPv4 IPv681
AS3491PCCW Global (HK) Ltd.TransitIPv456
AS24482SG.GSHostingIPv4 IPv638
AS38001NewMedia Express Pte LtdHostingIPv4 IPv638
AS213241TECHIT.BE SRLResidentialIPv4 IPv638
AS2497Internet Initiative Japan Inc.UnclassifiedIPv437

All 42 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 IPv661,464
AS9931National Telecom Public Company LimitedResidentialIPv4 IPv646,484
AS131090National Telecom Public Company LimitedResidentialIPv4 IPv641,750
AS4618Internet Thailand Company LimitedResidentialIPv4 IPv612,885
AS4765Pacific Internet Pte LtdUnclassifiedIPv4 IPv612,023
AS9335National Telecom Public Company LimitedHostingIPv4 IPv68,014
AS23884Proen Corp Public Company Limited.HostingIPv4 IPv65,757
AS131293TOT Public Company LimitedHostingIPv4 IPv64,407
AS4621UNINET-THEducationIPv4 IPv63,117
AS24187KIRZ Service ProviderResidentialIPv4 IPv61,175

All 36 downstreams →

Adjacency

Adjacent networks

All 92

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

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6114,319
AS23969TOT Public Company LimitedResidentialIPv4 IPv664,026
AS9931National Telecom Public Company LimitedResidentialIPv4 IPv660,504
AS131090National Telecom Public Company LimitedResidentialIPv4 IPv641,750
AS4621UNINET-THEducationIPv4 IPv621,619
AS174Cogent Communications, LLCTransitIPv4 IPv615,745
AS4618Internet Thailand Company LimitedResidentialIPv4 IPv614,899
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv613,101
AS2914NTT America, Inc.TransitIPv4 IPv612,577
AS4765Pacific Internet Pte LtdUnclassifiedIPv4 IPv612,133

All 92 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.