asn.dev

Observed topology

AS51396 PFCLOUD

Hosting Spamhaus ASN-DROP RIPE

Upstreams 14 carry this network
Downstreams 20 this network carries
Adjacent (IPv4) 23
Adjacent (IPv6) 21
Upstream graph Who carries AS51396, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS51396 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 14

Networks observed carrying traffic for AS51396: 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
AS49581Ferdinand Zink trading as Tube-HostingHostingIPv4 IPv61,582
AS62403PletX GmbHUnclassifiedIPv4 IPv6609
AS6939Hurricane Electric LLCTransitIPv4 IPv6385
AS64457Matteo Fruhwald trading as PipeHost e.U.UnclassifiedIPv6333
AS50263A-Systems Sp. z o.o.UnclassifiedIPv4 IPv6192
AS34779T-2, d.o.o.ResidentialIPv4 IPv696
AS50304Blix Solutions ASUnclassifiedIPv4 IPv650
AS24482SG.GSHostingIPv4 IPv626
AS20764CJSC RASCOMUnclassifiedIPv416
AS34927iFog GmbHHostingIPv416

All 14 upstreams →

Transit

Downstream networks

All 20

Networks for which AS51396 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS202412Omegatech LTDUnclassifiedIPv4477
AS214413WYOCORE TECHNOLOGIES LLCUnclassifiedIPv4420
AS197769VPS Dedicated LLCUnclassifiedIPv4360
AS209373SWISSNET LLCHostingIPv4241
AS208068Ludwig Moritz HodiamontUnclassifiedIPv6192
AS218751Fontaine, LLCUnclassifiedIPv4120
AS219067Chiara ContiUnclassifiedIPv4117
AS219097Fanth sp. z o.o.UnclassifiedIPv4 IPv697
AS205211Tilen BarbiricUnclassifiedIPv4 IPv696
AS212094Andre SchmidtUnclassifiedIPv674

All 20 downstreams →

Adjacency

Adjacent networks

All 34

Every AS seen directly next to AS51396 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS49581Ferdinand Zink trading as Tube-HostingHostingIPv4 IPv63,044
AS62403PletX GmbHUnclassifiedIPv4 IPv6843
AS6939Hurricane Electric LLCTransitIPv4 IPv6649
AS30823aurologic GmbHHostingIPv4507
AS202412Omegatech LTDUnclassifiedIPv4477
AS214413WYOCORE TECHNOLOGIES LLCUnclassifiedIPv4420
AS197769VPS Dedicated LLCUnclassifiedIPv4 IPv6396
AS64457Matteo Fruhwald trading as PipeHost e.U.UnclassifiedIPv6371
AS50263A-Systems Sp. z o.o.UnclassifiedIPv4 IPv6244
AS209373SWISSNET LLCHostingIPv4241

All 34 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.