asn.dev

Observed topology

AS137557 IGCL-AS-AP International gateway co., Ltd

Unclassified APNIC

Upstreams 8 carry this network
Downstreams 16 this network carries
Adjacent (IPv4) 28
Adjacent (IPv6) 17
Upstream graph Who carries AS137557, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS137557 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS137557: 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 IPv676
AS174Cogent Communications, LLCTransitIPv4 IPv67
AS2914NTT America, Inc.TransitIPv4 IPv67
AS45430SBN-IIG/AWN-IIG transit providerUnclassifiedIPv4 IPv64
AS24482SG.GSHostingIPv4 IPv62
AS38001NewMedia Express Pte LtdHostingIPv4 IPv62
AS17639Converge ICT Solutions Inc.UnclassifiedIPv41
AS58453China Mobile International LimitedUnclassifiedIPv41

Transit

Downstream networks

All 16

Networks for which AS137557 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS4618Internet Thailand Company LimitedResidentialIPv42,669
AS984OCTOPUS WEB SOLUTION INCHostingIPv4 IPv62,099
AS136255Telecom International Myanmar Co., LtdUnclassifiedIPv4 IPv61,410
AS9287True Internet Data Center Company LimitedHostingIPv4 IPv6906
AS63989DE-CORPUnclassifiedIPv4 IPv6537
AS56309Siamdata Communication Co.,Ltd.UnclassifiedIPv4 IPv6334
AS140867International gateway co., LtdUnclassifiedIPv4303
AS132708VNG Singapore PTE. LTD.UnclassifiedIPv4240
AS133524Global Technology Co., Ltd.UnclassifiedIPv4190
AS138934SLT Network Co.,LTDUnclassifiedIPv4175

All 16 downstreams →

Adjacency

Adjacent networks

All 28

Every AS seen directly next to AS137557 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv611,185
AS4618Internet Thailand Company LimitedResidentialIPv42,670
AS984OCTOPUS WEB SOLUTION INCHostingIPv4 IPv62,164
AS136975Global TechnologyUnclassifiedIPv4 IPv61,974
AS136255Telecom International Myanmar Co., LtdUnclassifiedIPv4 IPv61,920
AS174Cogent Communications, LLCTransitIPv4 IPv61,256
AS151210NEXGENET COMPANY LIMITEDUnclassifiedIPv4 IPv61,241
AS9287True Internet Data Center Company LimitedHostingIPv4 IPv6906
AS2914NTT America, Inc.TransitIPv4 IPv6844
AS63989DE-CORPUnclassifiedIPv4 IPv6650

All 28 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-23 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.15M 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.