Observed topology
AS5091 STRIPE
Transit
Upstream networks
Networks observed carrying traffic for AS5091: 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 |
|---|---|---|---|---|
| AS6461 | Zayo Bandwidth | Transit | IPv4 | 433 |
| AS11172 | Alestra, S. de R.L. de C.V. | Unclassified | IPv4 | 59 |
| AS8218 | Zayo Infrastructure France SA | Unclassified | IPv4 | 56 |
| AS9583 | Sify Limited | Unclassified | IPv4 | 54 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 53 |
| AS2856 | British Telecommunications Limited | Residential | IPv4 | 53 |
| AS9244 | Diyixian.com (TW) Limited | Hosting | IPv4 | 51 |
| AS5606 | GTS Telecom SRL | Unclassified | IPv4 | 49 |
| AS7018 | AT&T Enterprises, LLC | Residential | IPv4 | 46 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 46 |
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 | 45 |
| AS4637 | Telstra Global | Unclassified | IPv4 | 42 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 | 40 |
| AS33651 | Comcast Cable Communications, LLC | Unclassified | IPv4 | 40 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 | 37 |
| AS12271 | Charter Communications Inc | Residential | IPv4 | 24 |
| AS5400 | British Telecommunications Limited | Unclassified | IPv4 | 24 |
| AS852 | TELUS Communications Inc. | Residential | IPv4 | 23 |
| AS4826 | Vocus Connect International Backbone | Unclassified | IPv4 | 20 |
| AS33667 | Comcast Cable Communications, LLC | Unclassified | IPv4 | 19 |
| AS200780 | Eurofiber France SAS | Unclassified | IPv4 | 7 |
| AS46887 | Crown Castle Fiber LLC | Unclassified | IPv4 | 5 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 4 |
| AS207044 | Enet Telecommunications Networks Limited | Residential | IPv4 | 3 |
| AS293 | ESnet | Unclassified | IPv4 | 2 |
| AS35280 | F5 Networks SARL | Hosting | IPv6 | 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 AS5091 was observed as the last hop before the origin, meaning it appears to provide them transit.
No downstream observed. This network does not appear to carry transit for anyone.
Adjacency
Adjacent networks
Every AS seen directly next to AS5091 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS6461 | Zayo Bandwidth | Transit | IPv4 | 433 |
| AS11172 | Alestra, S. de R.L. de C.V. | Unclassified | IPv4 | 59 |
| AS8218 | Zayo Infrastructure France SA | Unclassified | IPv4 | 56 |
| AS9583 | Sify Limited | Unclassified | IPv4 | 54 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 53 |
| AS2856 | British Telecommunications Limited | Residential | IPv4 | 53 |
| AS9244 | Diyixian.com (TW) Limited | Hosting | IPv4 | 51 |
| AS5606 | GTS Telecom SRL | Unclassified | IPv4 | 49 |
| AS7018 | AT&T Enterprises, LLC | Residential | IPv4 | 46 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 IPv6 | 46 |
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 | 45 |
| AS4637 | Telstra Global | Unclassified | IPv4 | 42 |
| AS33651 | Comcast Cable Communications, LLC | Unclassified | IPv4 | 40 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 | 40 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 | 37 |
| AS5400 | British Telecommunications Limited | Unclassified | IPv4 | 24 |
| AS12271 | Charter Communications Inc | Residential | IPv4 | 24 |
| AS852 | TELUS Communications Inc. | Residential | IPv4 | 23 |
| AS4826 | Vocus Connect International Backbone | Unclassified | IPv4 | 20 |
| AS33667 | Comcast Cable Communications, LLC | Unclassified | IPv4 | 19 |
| AS200780 | Eurofiber France SAS | Unclassified | IPv4 | 7 |
| AS46887 | Crown Castle Fiber LLC | Unclassified | IPv4 | 5 |
| AS24482 | SG.GS | Hosting | IPv4 IPv6 | 4 |
| AS207044 | Enet Telecommunications Networks Limited | Residential | IPv4 | 3 |
| AS293 | ESnet | Unclassified | IPv4 | 2 |
| AS35280 | F5 Networks SARL | Hosting | IPv6 | 1 |
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 AS5091, 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 |
|---|---|---|---|
| Equinix Internet Exchange San Jose (Bay Area) | San Jose, United States | 206.223.116.96 | 193 |
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 2026-08-09 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,164 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.