asn.dev

Observed topology

AS131219 ISPL-AS-AP - Indosat Singapore Pte. Ltd.

Unclassified ARIN NSP

Upstreams 12 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 19
Adjacent (IPv6) 10
Upstream graph Who carries AS131219, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS131219 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 12

Networks observed carrying traffic for AS131219: 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
AS1299Arelion Sweden ABTransitIPv4 IPv635
AS9002RETN LimitedUnclassifiedIPv4 IPv626
AS6939Hurricane Electric LLCTransitIPv4 IPv624
AS2914NTT America, Inc.TransitIPv4 IPv618
AS174Cogent Communications, LLCTransitIPv415
AS7473Singapore Telecommunications LtdUnclassifiedIPv415
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv63
AS24482SG.GSHostingIPv4 IPv63
AS37989DCS1 Pte. Ltd.HostingIPv4 IPv63
AS38001NewMedia Express Pte LtdHostingIPv4 IPv63

All 12 upstreams →

Transit

Downstream networks

inferred

Networks for which AS131219 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS138077PT Abhinawa Sumberdaya AsiaHostingIPv4 IPv63,216
AS135531Global Integrated Communications Pte LtdUnclassifiedIPv4285
AS149746PT Blip Integrator ProviderUnclassifiedIPv4104

Adjacency

Adjacent networks

All 20

Every AS seen directly next to AS131219 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS138077PT Abhinawa Sumberdaya AsiaHostingIPv4 IPv64,526
AS1299Arelion Sweden ABTransitIPv4 IPv62,204
AS174Cogent Communications, LLCTransitIPv4786
AS2914NTT America, Inc.TransitIPv4 IPv6773
AS6939Hurricane Electric LLCTransitIPv4 IPv6375
AS135531Global Integrated Communications Pte LtdUnclassifiedIPv4285
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4203
AS37721Virtual Technologies & SolutionsResidentialIPv4160
AS1103SURF B.V.UnclassifiedIPv4134
AS37989DCS1 Pte. Ltd.HostingIPv4 IPv6115

All 20 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.03M 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.