asn.dev

Observed topology

AS31727 NODE4-AS

Hosting RIPE Cable/DSL/ISP

Upstreams 27 carry this network
Downstreams 6 this network carries
Adjacent (IPv4) 30
Adjacent (IPv6) 16
Upstream graph Who carries AS31727, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS31727 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 27

Networks observed carrying traffic for AS31727: 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
AS3257GTT Communications Inc.TransitIPv4 IPv65,428
AS6939Hurricane Electric LLCTransitIPv4 IPv6671
AS2914NTT America, Inc.TransitIPv4 IPv6444
AS174Cogent Communications, LLCTransitIPv4 IPv6257
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6230
AS33891Core-Backbone GmbHHostingIPv4160
AS4657StarHub LtdResidentialIPv479
AS42708Glesys ABUnclassifiedIPv479
AS24482SG.GSHostingIPv4 IPv678
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv677

All 27 upstreams →

Transit

Downstream networks

inferred

Networks for which AS31727 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS29452Secura Hosting LtdHostingIPv4 IPv6212
AS44052ICONIC MEDIA SYSTEMS LIMITEDUnclassifiedIPv4174
AS49793LMP Technical Services LtdUnclassifiedIPv4 IPv691
AS39620NG BAILEY IT SERVICES LIMITEDUnclassifiedIPv459
AS39633COMPUTER SYSTEMS INTEGRATION GROUP LIMITEDUnclassifiedIPv459
AS208363Cellhire France SARLUnclassifiedIPv458

Adjacency

Adjacent networks

All 33

Every AS seen directly next to AS31727 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3257GTT Communications Inc.TransitIPv4 IPv65,781
AS6939Hurricane Electric LLCTransitIPv4 IPv6740
AS2914NTT America, Inc.TransitIPv4 IPv6500
AS174Cogent Communications, LLCTransitIPv4 IPv6281
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6255
AS29452Secura Hosting LtdHostingIPv4 IPv6212
AS33891Core-Backbone GmbHHostingIPv4174
AS44052ICONIC MEDIA SYSTEMS LIMITEDUnclassifiedIPv4174
AS49793LMP Technical Services LtdUnclassifiedIPv4 IPv691
AS4657StarHub LtdResidentialIPv487

All 33 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-26 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.