asn.dev

Observed topology

AS12637 SEEWEB SEEWEB s.r.l.

Hosting RIPE

Upstreams 29 carry this network
Downstreams 15 this network carries
Adjacent (IPv4) 33
Adjacent (IPv6) 26
Upstream graph Who carries AS12637, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS12637 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 29

Networks observed carrying traffic for AS12637: 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 IPv6651
AS6939Hurricane Electric LLCTransitIPv4 IPv6350
AS174Cogent Communications, LLCTransitIPv4 IPv6248
AS2914NTT America, Inc.TransitIPv4 IPv6233
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6140
AS24482SG.GSHostingIPv4 IPv642
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv641
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv640
AS48185team.blue NVUnclassifiedIPv4 IPv640
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv640

All 29 upstreams →

Transit

Downstream networks

All 15

Networks for which AS12637 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS200424Alessandro Coratelli trading as CODEMAUnclassifiedIPv4242
AS60087Netsons s.r.l.UnclassifiedIPv4 IPv6206
AS202448MVPS LTDUnclassifiedIPv4 IPv6206
AS15605Connesi s.p.a.ResidentialIPv4 IPv6172
AS6831Net & Com s.r.l.UnclassifiedIPv4116
AS50627Frosinone Wireless S.R.L.UnclassifiedIPv4115
AS206539HelloTel Telecomunicazioni srlResidentialIPv4114
AS213071VVLAB S.R.L.UnclassifiedIPv4 IPv691
AS199699GAMGROUP SRLHostingIPv4 IPv677
AS212768Infosystem Security s.r.l.UnclassifiedIPv458

All 15 downstreams →

Adjacency

Adjacent networks

All 44

Every AS seen directly next to AS12637 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv61,138
AS2914NTT America, Inc.TransitIPv4 IPv6511
AS174Cogent Communications, LLCTransitIPv4 IPv6488
AS6939Hurricane Electric LLCTransitIPv4 IPv6470
AS15605Connesi s.p.a.ResidentialIPv4 IPv6271
AS200424Alessandro Coratelli trading as CODEMAUnclassifiedIPv4242
AS60087Netsons s.r.l.UnclassifiedIPv4 IPv6206
AS202448MVPS LTDUnclassifiedIPv4 IPv6206
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6173
AS6831Net & Com s.r.l.UnclassifiedIPv4116

All 44 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.00M 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.