asn.dev

Observed topology

AS28725 CETIN-AS

Residential RIPE NSP

Upstreams 35 carry this network
Downstreams 35 this network carries
Adjacent (IPv4) 69
Adjacent (IPv6) 44
Upstream graph Who carries AS28725, and who carries them, drawn as a map up to the transit-free core. 7 exchanges Where AS28725 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 35

Networks observed carrying traffic for AS28725: 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
AS1299Arelion Sweden ABTransitIPv4 IPv6219
AS174Cogent Communications, LLCTransitIPv4 IPv666
AS6939Hurricane Electric LLCTransitIPv4 IPv661
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv628
AS50304Blix Solutions ASUnclassifiedIPv416
AS24482SG.GSHostingIPv4 IPv611
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv611
AS1836green.ch AGResidentialIPv4 IPv610
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv610
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv610

All 35 upstreams →

Transit

Downstream networks

All 35

Networks for which AS28725 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS203645Jan RyznarUnclassifiedIPv4 IPv6991
AS52029Palanet s.r.o.UnclassifiedIPv4522
AS24641FASTER CZ spol. s r.o.HostingIPv4 IPv6362
AS206438MX-NET Telekomunikace s.r.o.UnclassifiedIPv4 IPv6361
AS56566SATT a.s.UnclassifiedIPv4353
AS35613FASTER CZ spol. s r.o.UnclassifiedIPv4 IPv6326
AS50784Intraweb servis s.r.o.UnclassifiedIPv4 IPv6323
AS206177SitePark s.r.o.UnclassifiedIPv4 IPv6290
AS196952BEZVANET s.r.o.UnclassifiedIPv4 IPv6182
AS35046OMEGA plus Chrudim s.r.o.UnclassifiedIPv4 IPv6176

All 35 downstreams →

Adjacency

Adjacent networks

All 73

Every AS seen directly next to AS28725 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv62,368
AS24641FASTER CZ spol. s r.o.HostingIPv4 IPv61,149
AS203645Jan RyznarUnclassifiedIPv4 IPv6991
AS174Cogent Communications, LLCTransitIPv4 IPv6912
AS6939Hurricane Electric LLCTransitIPv4 IPv6863
AS35613FASTER CZ spol. s r.o.UnclassifiedIPv4 IPv6546
AS52029Palanet s.r.o.UnclassifiedIPv4522
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6494
AS35046OMEGA plus Chrudim s.r.o.UnclassifiedIPv4 IPv6372
AS206438MX-NET Telekomunikace s.r.o.UnclassifiedIPv4 IPv6361

All 73 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-28 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.