Observed topology
AS600 OARNET-AS
Unclassified ARIN Educational/Research
Transit
Upstream networks
Networks observed carrying traffic for AS600: 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 |
|---|---|---|---|---|
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 4,264 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 | 571 |
| AS7018 | AT&T Enterprises, LLC | Residential | IPv4 IPv6 | 359 |
| AS24482 | SG.GS | Hosting | IPv4 | 78 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 78 |
| AS55002 | F5, Inc. | Unclassified | IPv4 | 58 |
| AS11164 | Internet2 | Education | IPv4 IPv6 | 10 |
| AS11537 | Internet2 | Unclassified | IPv6 | 2 |
Transit
Downstream networks
Networks for which AS600 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 | 1,625 |
| AS26247 | Hamilton-Clermont Cooperative Assn. | Unclassified | IPv4 | 1,134 |
| AS30712 | META Solutions | Unclassified | IPv4 | 1,066 |
| AS36831 | XAVIER-UNIVERSITY | Unclassified | IPv4 | 910 |
| AS29941 | Tri-County Computer Services Association | Unclassified | IPv4 | 770 |
| AS46491 | Metropolitan Educational Council | Unclassified | IPv4 | 689 |
| AS12247 | Tri-Rivers Educational Computer Association | Unclassified | IPv4 | 567 |
| AS33254 | Ohio Mid Eastern Regional Education Service Agency | Unclassified | IPv4 | 567 |
| AS394399 | Licking Area Computer Association | Unclassified | IPv4 | 504 |
| AS159 | Ohio State University | Unclassified | IPv4 IPv6 | 486 |
Adjacency
Adjacent networks
Every AS seen directly next to AS600 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 16,424 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 | 2,017 |
| AS7018 | AT&T Enterprises, LLC | Residential | IPv4 IPv6 | 2,003 |
| AS36794 | META Solutions | Unclassified | IPv4 | 1,625 |
| AS26247 | Hamilton-Clermont Cooperative Assn. | Unclassified | IPv4 | 1,134 |
| AS30712 | META Solutions | Unclassified | IPv4 | 1,066 |
| AS36831 | XAVIER-UNIVERSITY | Unclassified | IPv4 | 910 |
| AS29941 | Tri-County Computer Services Association | Unclassified | IPv4 | 770 |
| AS46491 | Metropolitan Educational Council | Unclassified | IPv4 | 751 |
| AS12247 | Tri-Rivers Educational Computer Association | Unclassified | IPv4 | 567 |
Provenance
Where this comes from
Derived from routing tables collected at 2026-10-19 10:00 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.