asn.dev

Observed topology

AS2734 CORESITE

Hosting ARIN

Upstreams 9 carry this network
Downstreams 19 this network carries
Adjacent (IPv4) 26
Adjacent (IPv6) 11
Upstream graph Who carries AS2734, and who carries them, drawn as a map up to the transit-free core. 10 exchanges Where AS2734 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS2734: 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 IPv63,960
AS2914NTT America, Inc.TransitIPv4 IPv6476
AS3257GTT Communications Inc.TransitIPv4352
AS24482SG.GSHostingIPv4 IPv686
AS3303Swisscom (Schweiz) AGResidentialIPv465
AS17639Converge ICT Solutions Inc.UnclassifiedIPv465
AS9002RETN LimitedUnclassifiedIPv642
AS25091IP-Max SAUnclassifiedIPv618
AS13030Init7 (Switzerland) Ltd.HostingIPv63

Transit

Downstream networks

All 19

Networks for which AS2734 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS29906Westat, Inc.UnclassifiedIPv4 IPv6557
AS10255Sinister and SolitaryUnclassifiedIPv4 IPv6529
AS11333CyberTrailsUnclassifiedIPv4497
AS397822California Resources CorporationUnclassifiedIPv4191
AS401174State of California, Department of TechnologyUnclassifiedIPv4 IPv6134
AS5651GMLL CAPITAL MANAGEMENT LLCUnclassifiedIPv4130
AS26551Sargent & Lundy EngineersUnclassifiedIPv4130
AS4898Opentable, Inc.UnclassifiedIPv4125
AS30149The Goldman Sachs Group, Inc.UnclassifiedIPv4105
AS22437CoreSiteHostingIPv4 IPv6101

All 19 downstreams →

Adjacency

Adjacent networks

All 29

Every AS seen directly next to AS2734 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv66,795
AS2914NTT America, Inc.TransitIPv4 IPv6749
AS3257GTT Communications Inc.TransitIPv4 IPv6612
AS396300CoreSiteUnclassifiedIPv4584
AS29906Westat, Inc.UnclassifiedIPv4 IPv6557
AS10255Sinister and SolitaryUnclassifiedIPv4 IPv6529
AS11333CyberTrailsUnclassifiedIPv4497
AS397822California Resources CorporationUnclassifiedIPv4191
AS401174State of California, Department of TechnologyUnclassifiedIPv4 IPv6134
AS24482SG.GSHostingIPv4 IPv6132

All 29 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-12 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.21M 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.