asn.dev

Observed topology

AS2857 RLP-NET Johannes Gutenberg-Universitaet Mainz

Education RIPE Educational/Research

Upstreams 15 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 13
Adjacent (IPv6) 11
Upstream graph Who carries AS2857, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS2857 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 15

Networks observed carrying traffic for AS2857: 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 IPv6424
AS174Cogent Communications, LLCTransitIPv4 IPv693
AS8365Man-da.de GmbHEducationIPv4 IPv652
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv631
AS9002RETN LimitedUnclassifiedIPv420
AS24482SG.GSHostingIPv4 IPv611
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv611
AS212024Marc SchmittUnclassifiedIPv4 IPv611
AS3303Swisscom (Schweiz) AGResidentialIPv410
AS8551Bezeq International Ltd.UnclassifiedIPv410

All 15 upstreams →

Transit

Downstream networks

inferred

Networks for which AS2857 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS199578Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-LandauUnclassifiedIPv4 IPv6186

Adjacency

Adjacent networks

All 16

Every AS seen directly next to AS2857 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6649
AS199578Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-LandauUnclassifiedIPv4 IPv6275
AS174Cogent Communications, LLCTransitIPv4 IPv6108
AS8365Man-da.de GmbHEducationIPv4 IPv680
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv631
AS9002RETN LimitedUnclassifiedIPv420
AS8551Bezeq International Ltd.UnclassifiedIPv412
AS24482SG.GSHostingIPv4 IPv611
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv611
AS212024Marc SchmittUnclassifiedIPv4 IPv611

All 16 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-31 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.50M 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.