asn.dev

Observed topology

AS12307 RAVANA Sandro Bolliger trading as Bolliger Network Solutions

Hosting RIPE Content

Upstreams 7 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 9
Adjacent (IPv6) 10
Upstream graph Who carries AS12307, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS12307 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS12307: 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 IPv670
AS29691Nine Internet Solutions AGHostingIPv4 IPv656
AS57118CommunityRack.org VereinUnclassifiedIPv4 IPv652
AS34927iFog GmbHHostingIPv410
AS24482SG.GSHostingIPv4 IPv64
AS34019Hivane AssociationUnclassifiedIPv42
AS48362Stadtwerke FeldkirchResidentialIPv62

Transit

Downstream networks

inferred

Networks for which AS12307 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS57757Jonas MeierUnclassifiedIPv4 IPv672
AS42032Sandro Bolliger trading as Bolliger Network SolutionsUnclassifiedIPv4 IPv671
AS204418Sandro Bolliger trading as Bolliger Network SolutionsUnclassifiedIPv636
AS59808Sandro Bolliger trading as Bolliger Network SolutionsUnclassifiedIPv4 IPv613

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS12307 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6184
AS57118CommunityRack.org VereinUnclassifiedIPv4 IPv690
AS29691Nine Internet Solutions AGHostingIPv4 IPv687
AS57757Jonas MeierUnclassifiedIPv4 IPv672
AS42032Sandro Bolliger trading as Bolliger Network SolutionsUnclassifiedIPv4 IPv671
AS204418Sandro Bolliger trading as Bolliger Network SolutionsUnclassifiedIPv636
AS24482SG.GSHostingIPv4 IPv613
AS59808Sandro Bolliger trading as Bolliger Network SolutionsUnclassifiedIPv4 IPv613
AS34927iFog GmbHHostingIPv412
AS34019Hivane AssociationUnclassifiedIPv43

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.