asn.dev

Observed topology

AS19318 IS-AS-1 - Interserver, Inc

Hosting DROP-listed space ARIN

Upstreams 9 carry this network
Downstreams 35 this network carries
Adjacent (IPv4) 42
Adjacent (IPv6) 20
Upstream graph Who carries AS19318, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS19318 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS19318: 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
AS174Cogent Communications, LLCTransitIPv4 IPv62,394
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv41,638
AS6939Hurricane Electric LLCTransitIPv4 IPv61,564
AS3257GTT Communications Inc.TransitIPv4 IPv61,128
AS22652Videotron LteeResidentialIPv4 IPv6253
AS24482SG.GSHostingIPv4 IPv6123
AS3303Swisscom (Schweiz) AGResidentialIPv490
AS9002RETN LimitedUnclassifiedIPv625
AS33891Core-Backbone GmbHHostingIPv410

Transit

Downstream networks

All 35

Networks for which AS19318 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS41745Ilia BaikovUnclassifiedIPv4710
AS44382Fiba Cloud Operation Company, LLCHostingIPv4 IPv6475
AS2105581337 Services GmbHHostingIPv4470
AS135392MillenialHost LimitedUnclassifiedIPv4412
AS393582VIDEO DIRECT SATELLITE & ENTERTAINMENTUnclassifiedIPv4 IPv6390
AS216475NKtelecom INCUnclassifiedIPv4 IPv6310
AS64245DigitalFyre Internet Solutions, LLC.UnclassifiedIPv4 IPv6307
AS397563ADEOXUnclassifiedIPv4303
AS55079Third Gear NetworksUnclassifiedIPv4 IPv6282
AS201813Contrust Solutions S.R.L.UnclassifiedIPv4237

All 35 downstreams →

Adjacency

Adjacent networks

All 44

Every AS seen directly next to AS19318 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv64,133
AS3257GTT Communications Inc.TransitIPv4 IPv62,859
AS6939Hurricane Electric LLCTransitIPv4 IPv62,772
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv42,674
AS41745Ilia BaikovUnclassifiedIPv4710
AS44382Fiba Cloud Operation Company, LLCHostingIPv4 IPv6475
AS22652Videotron LteeResidentialIPv4 IPv6471
AS135392MillenialHost LimitedUnclassifiedIPv4471
AS2105581337 Services GmbHHostingIPv4470
AS393582VIDEO DIRECT SATELLITE & ENTERTAINMENTUnclassifiedIPv4 IPv6390

All 44 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.