Observed topology

AS3112 OARNET-AS-1

Education ARIN Educational/Research

Upstreams 1 carry this network

Downstreams 38 this network carries

Adjacent (IPv4) 39

Adjacent (IPv6) 0

Upstream graph Who carries AS3112, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS3112 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS3112: 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.

AS	Network	Type	Families	Paths seen
AS11537	Internet2	Unclassified	IPv4	240

Transit

Downstream networks

All 38

Networks for which AS3112 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS36794	META Solutions	Unclassified	IPv4	143
AS32666	Case Western Reserve University	Unclassified	IPv4	134
AS26247	Hamilton-Clermont Cooperative Assn.	Unclassified	IPv4	90
AS30712	META Solutions	Unclassified	IPv4	90
AS12247	Tri-Rivers Educational Computer Association	Unclassified	IPv4	59
AS46491	Metropolitan Educational Council	Unclassified	IPv4	59
AS26818	Columbus Public Schools	Unclassified	IPv4	52
AS22320	Miami Valley Educational Computer Association	Unclassified	IPv4	51
AS33254	Ohio Mid Eastern Regional Education Service Agency	Unclassified	IPv4	45
AS394399	Licking Area Computer Association	Unclassified	IPv4	40

All 38 downstreams →

Adjacency

Adjacent networks

All 39

Every AS seen directly next to AS3112 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS11537	Internet2	Unclassified	IPv4	1,514
AS36794	META Solutions	Unclassified	IPv4	143
AS32666	Case Western Reserve University	Unclassified	IPv4	134
AS26247	Hamilton-Clermont Cooperative Assn.	Unclassified	IPv4	90
AS30712	META Solutions	Unclassified	IPv4	90
AS46491	Metropolitan Educational Council	Unclassified	IPv4	64
AS12247	Tri-Rivers Educational Computer Association	Unclassified	IPv4	59
AS29709	Northeast Ohio Network for Educational Technology	Unclassified	IPv4	56
AS26818	Columbus Public Schools	Unclassified	IPv4	52
AS22320	Miami Valley Educational Computer Association	Unclassified	IPv4	51

All 39 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-25 12:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.