asn.dev

Observed topology

AS15557 LDCOMNET --- I3Dnet ---

Residential RIPE

Upstreams 24 carry this network
Downstreams 90 this network carries
Adjacent (IPv4) 101
Adjacent (IPv6) 49
Upstream graph Who carries AS15557, and who carries them, drawn as a map up to the transit-free core. 10 exchanges Where AS15557 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 24

Networks observed carrying traffic for AS15557: 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 IPv62,622
AS2914NTT America, Inc.TransitIPv4 IPv61,043
AS174Cogent Communications, LLCTransitIPv4 IPv61,025
AS9002RETN LimitedUnclassifiedIPv4 IPv6877
AS1273IDDQD-ASBusinessIPv4 IPv6786
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6489
AS3320Deutsche Telekom AGMobileIPv4 IPv6151
AS1836green.ch AGResidentialIPv4 IPv6149
AS6696VERIXI SAUnclassifiedIPv4 IPv6149
AS42708Glesys ABUnclassifiedIPv4 IPv6149

All 24 upstreams →

Transit

Downstream networks

All 90

Networks for which AS15557 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS60032Coriolis Telecom SASUnclassifiedIPv4 IPv62,105
AS3259Docapost BPO SASUnclassifiedIPv41,696
AS60855LA DIRECTION INTERMINISTERIELLE DU NUMERIQUEUnclassifiedIPv41,630
AS12566SFR SAUnclassifiedIPv41,593
AS34949IDLINE SASUnclassifiedIPv41,128
AS199677CRIANN Association declareeUnclassifiedIPv4472
AS20776Outremer Telecom SASUnclassifiedIPv4380
AS199233Mutuelle Assurance Instituteur France STEUnclassifiedIPv4288
AS205862FEDERAL SERVICE GIEUnclassifiedIPv4 IPv6276
AS201072Aeroport de la Cote d AzurUnclassifiedIPv4270

All 90 downstreams →

Adjacency

Adjacent networks

All 114

Every AS seen directly next to AS15557 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv67,244
AS2914NTT America, Inc.TransitIPv4 IPv63,034
AS9002RETN LimitedUnclassifiedIPv4 IPv62,692
AS174Cogent Communications, LLCTransitIPv4 IPv62,683
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv62,325
AS60032Coriolis Telecom SASUnclassifiedIPv4 IPv62,105
AS1273IDDQD-ASBusinessIPv4 IPv61,866
AS3259Docapost BPO SASUnclassifiedIPv41,696
AS60855LA DIRECTION INTERMINISTERIELLE DU NUMERIQUEUnclassifiedIPv41,630
AS12566SFR SAUnclassifiedIPv41,593

All 114 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.25M 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.