asn.dev

Observed topology

AS2571 DHLNET

Unclassified ARIN

Upstreams 8 carry this network
Downstreams 0 this network carries
Adjacent (IPv4) 8
Adjacent (IPv6) 5
Upstream graph Who carries AS2571, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS2571 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS2571: 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
AS55002F5, Inc.UnclassifiedIPv4 IPv63,059
AS16019Vodafone Czech Republic a.s.UnclassifiedIPv4 IPv6528
AS6855Slovak Telekom, a.s.MobileIPv4 IPv6344
AS4788TM TECHNOLOGY SERVICES SDN. BHD.MobileIPv4 IPv6335
AS3356Level 3 Parent, LLCTransitIPv4 IPv6274
AS32787Akamai Technologies, Inc.HostingIPv4240
AS10204Arcnet NTT MSC ISPUnclassifiedIPv458
AS5610O2 Czech Republic, a.s.UnclassifiedIPv46

Transit

Downstream networks

inferred

Networks for which AS2571 was observed as the last hop before the origin, meaning it appears to provide them transit.

No downstream observed. This network does not appear to carry transit for anyone.

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS2571 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS55002F5, Inc.UnclassifiedIPv4 IPv63,059
AS16019Vodafone Czech Republic a.s.UnclassifiedIPv4 IPv6528
AS6855Slovak Telekom, a.s.MobileIPv4 IPv6344
AS4788TM TECHNOLOGY SERVICES SDN. BHD.MobileIPv4 IPv6335
AS3356Level 3 Parent, LLCTransitIPv4 IPv6274
AS32787Akamai Technologies, Inc.HostingIPv4240
AS10204Arcnet NTT MSC ISPUnclassifiedIPv458
AS5610O2 Czech Republic, a.s.UnclassifiedIPv46

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.