asn.dev

Observed topology

AS4136 QTS

Hosting ARIN NSP

Upstreams 10 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 11
Adjacent (IPv6) 9
Upstream graph Who carries AS4136, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS4136 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS4136: 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 IPv6248
AS1299Arelion Sweden ABTransitIPv4 IPv638
AS174Cogent Communications, LLCTransitIPv4 IPv624
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv616
AS3356Level 3 Parent, LLCTransitIPv4 IPv611
AS22652Videotron LteeResidentialIPv4 IPv611
AS24482SG.GSHostingIPv4 IPv66
AS37721Virtual Technologies & SolutionsResidentialIPv45
AS29632Netassist International EOODUnclassifiedIPv62
AS25091IP-Max SAUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS4136 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS397380Temple University Health System, Inc.UnclassifiedIPv4375
AS2725Berkeley Educational Services of New Jersey, Inc.UnclassifiedIPv465
AS11823Lord, Abbett & Co.UnclassifiedIPv445

Adjacency

Adjacent networks

All 13

Every AS seen directly next to AS4136 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6596
AS397380Temple University Health System, Inc.UnclassifiedIPv4375
AS1299Arelion Sweden ABTransitIPv4 IPv683
AS2725Berkeley Educational Services of New Jersey, Inc.UnclassifiedIPv465
AS174Cogent Communications, LLCTransitIPv4 IPv656
AS11823Lord, Abbett & Co.UnclassifiedIPv445
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv636
AS22652Videotron LteeResidentialIPv4 IPv627
AS3356Level 3 Parent, LLCTransitIPv4 IPv619
AS24482SG.GSHostingIPv4 IPv614

All 13 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.