Observed topology
AS10490 SOUTHERN-CROSSROADS-SOX
Transit
Upstream networks
Networks observed carrying traffic for AS10490: 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 |
|---|---|---|---|---|
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 41 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 24 |
| AS11537 | Internet2 | Unclassified | IPv4 IPv6 | 13 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 13 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 7 |
| AS11164 | Internet2 | Education | IPv4 IPv6 | 4 |
| AS293 | ESnet | Unclassified | IPv4 | 1 |
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.
Transit
Downstream networks
Networks for which AS10490 was observed as the last hop before the origin, meaning it appears to provide them transit.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS2637 | Georgia Institute of Technology | Education | IPv4 IPv6 | 885 |
| AS3479 | Board of Regents of the University System of Georgia | Education | IPv4 | 337 |
| AS7212 | Vanderbilt University | Education | IPv4 IPv6 | 231 |
| AS3452 | University of Alabama at Birmingham | Education | IPv4 | 188 |
| AS10364 | University of Alabama in Huntsville | Education | IPv4 | 184 |
| AS26335 | Middle Tennessee State University | Unclassified | IPv4 | 177 |
| AS3450 | University of Tennessee | Education | IPv4 | 176 |
| AS40204 | Jacksonville State University | Unclassified | IPv4 | 142 |
| AS21517 | Kennesaw State University | Unclassified | IPv4 | 136 |
| AS29972 | Morehouse School of Medicine | Unclassified | IPv4 | 124 |
| AS3464 | Alabama Supercomputer Authority | Education | IPv4 IPv6 | 121 |
| AS398034 | Clark Atlanta University | Unclassified | IPv4 | 120 |
| AS12173 | The University of Alabama | Unclassified | IPv4 | 102 |
| AS398940 | University of South Alabama | Unclassified | IPv4 | 96 |
| AS3512 | Emory University | Education | IPv4 | 77 |
| AS18682 | Alabama A&M University | Unclassified | IPv4 | 70 |
| AS6112 | Auburn University | Education | IPv4 | 63 |
| AS10631 | Georgia State University | Education | IPv4 | 62 |
| AS36441 | University of Georgia | Unclassified | IPv4 | 57 |
| AS2722 | CULR, LLC | Unclassified | IPv4 IPv6 | 55 |
| AS26883 | Morehouse College | Unclassified | IPv4 | 52 |
| AS393529 | Vanderbilt University Medical Center | Unclassified | IPv4 IPv6 | 47 |
| AS27422 | Tennessee State University | Unclassified | IPv4 | 39 |
| AS14048 | The University of Memphis | Unclassified | IPv4 | 30 |
| AS50 | Oak Ridge National Laboratory | Unclassified | IPv4 | 12 |
| AS401680 | Tuskegee University | Unclassified | IPv4 | 8 |
| AS12005 | University of South Carolina | Unclassified | IPv4 | 7 |
| AS33669 | Meharry Medical College | Unclassified | IPv4 | 6 |
| AS33600 | Tennessee Technological University | Unclassified | IPv4 | 6 |
| AS21784 | The Robert W. Woodruff Library of the Atlanta University Center, Inc. | Unclassified | IPv4 | 6 |
| AS394570 | Alabama State University | Unclassified | IPv4 IPv6 | 6 |
Adjacency
Adjacent networks
Every AS seen directly next to AS10490 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS1299 | Arelion Sweden AB | Transit | IPv4 IPv6 | 1,481 |
| AS11537 | Internet2 | Unclassified | IPv4 IPv6 | 1,239 |
| AS2637 | Georgia Institute of Technology | Education | IPv4 IPv6 | 885 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 666 |
| AS3479 | Board of Regents of the University System of Georgia | Education | IPv4 | 578 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 460 |
| AS174 | Cogent Communications, LLC | Transit | IPv4 IPv6 | 428 |
| AS11164 | Internet2 | Education | IPv4 IPv6 | 338 |
| AS40220 | Virginia Polytechnic Institute and State Univ. | Unclassified | IPv4 | 294 |
| AS3450 | University of Tennessee | Education | IPv4 IPv6 | 260 |
| AS7212 | Vanderbilt University | Education | IPv4 IPv6 | 231 |
| AS14048 | The University of Memphis | Unclassified | IPv4 | 213 |
| AS2722 | CULR, LLC | Unclassified | IPv4 IPv6 | 213 |
| AS293 | ESnet | Unclassified | IPv4 | 204 |
| AS3452 | University of Alabama at Birmingham | Education | IPv4 | 188 |
| AS10364 | University of Alabama in Huntsville | Education | IPv4 | 184 |
| AS26335 | Middle Tennessee State University | Unclassified | IPv4 | 177 |
| AS3464 | Alabama Supercomputer Authority | Education | IPv4 IPv6 | 151 |
| AS40204 | Jacksonville State University | Unclassified | IPv4 | 142 |
| AS21517 | Kennesaw State University | Unclassified | IPv4 | 136 |
| AS29972 | Morehouse School of Medicine | Unclassified | IPv4 | 124 |
| AS398034 | Clark Atlanta University | Unclassified | IPv4 | 120 |
| AS12173 | The University of Alabama | Unclassified | IPv4 | 102 |
| AS398940 | University of South Alabama | Unclassified | IPv4 | 96 |
| AS3480 | Board of Regents of the University System of Georgia | Education | IPv4 | 90 |
| AS3512 | Emory University | Education | IPv4 | 77 |
| AS18682 | Alabama A&M University | Unclassified | IPv4 | 70 |
| AS6112 | Auburn University | Education | IPv4 | 63 |
| AS10631 | Georgia State University | Education | IPv4 | 62 |
| AS36441 | University of Georgia | Unclassified | IPv4 | 57 |
| AS26883 | Morehouse College | Unclassified | IPv4 | 52 |
| AS393529 | Vanderbilt University Medical Center | Unclassified | IPv4 IPv6 | 47 |
| AS27422 | Tennessee State University | Unclassified | IPv4 | 39 |
| AS15029 | U.S. Department of Health & Human Services | Unclassified | IPv4 | 14 |
| AS50 | Oak Ridge National Laboratory | Unclassified | IPv4 | 12 |
| AS27355 | Spelman College | Unclassified | IPv4 | 11 |
| AS401680 | Tuskegee University | Unclassified | IPv4 | 8 |
| AS35280 | F5 Networks SARL | Hosting | IPv4 | 7 |
| AS40111 | Parker FiberNet, LLC | Unclassified | IPv4 | 7 |
| AS12005 | University of South Carolina | Unclassified | IPv4 | 7 |
| AS21784 | The Robert W. Woodruff Library of the Atlanta University Center, Inc. | Unclassified | IPv4 | 6 |
| AS33669 | Meharry Medical College | Unclassified | IPv4 | 6 |
| AS33600 | Tennessee Technological University | Unclassified | IPv4 | 6 |
| AS394570 | Alabama State University | Unclassified | IPv4 IPv6 | 6 |
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.
Interconnection
Exchange presence
Internet exchanges where Packet Clearing House has a port recorded for AS10490, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it. Recorded at 1 exchange across 1 country and 1 region.
| Exchange | Location | Their address | Member ports |
|---|---|---|---|
| Digital Realty Atlanta Internet Exchange | Atlanta, United States | 206.126.110.11 | 175 |
Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.
Provenance
Where this comes from
Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.
Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.
Exchange presence comes from a separate dataset: the directory collected 2026-08-08 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,137 recorded member ports, licensed CC BY-NC-SA 3.0.
PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.