asn.dev

Observed topology

AS31655 ASN-GAMMATELECOM

Upstreams 9 carry this network
Downstreams 6 this network carries
Adjacent (IPv4) 14
Adjacent (IPv6) 6

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS31655: 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
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,086
AS2914NTT America, Inc.TransitIPv4 IPv6616
AS6939Hurricane Electric LLCTransitIPv4328
AS33891Core-Backbone GmbHHostingIPv4 IPv671
AS24482SG.GSHostingIPv4 IPv637
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv637
AS35280F5 Networks SARLHostingIPv434
AS4637Telstra GlobalUnclassifiedIPv434
AS13030Init7 (Switzerland) Ltd.HostingIPv63

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

inferred

Networks for which AS31655 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS204193Gamma Telecom Holdings LtdUnclassifiedIPv4177
AS8918Coolwave Communications LimitedUnclassifiedIPv489
AS198472Manchester City CouncilUnclassifiedIPv460
AS216167Gamma Telecom Holdings LtdUnclassifiedIPv459
AS41553Reed Specialist Recruitment LimitedUnclassifiedIPv459
AS205237SAVILLS PLCUnclassifiedIPv446

Adjacency

Adjacent networks

20 shown

Every AS seen directly next to AS31655 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,317
AS2914NTT America, Inc.TransitIPv4 IPv6757
AS6939Hurricane Electric LLCTransitIPv4400
AS204193Gamma Telecom Holdings LtdUnclassifiedIPv4177
AS8918Coolwave Communications LimitedUnclassifiedIPv489
AS33891Core-Backbone GmbHHostingIPv4 IPv687
AS198472Manchester City CouncilUnclassifiedIPv460
AS41553Reed Specialist Recruitment LimitedUnclassifiedIPv459
AS216167Gamma Telecom Holdings LtdUnclassifiedIPv459
AS205237SAVILLS PLCUnclassifiedIPv446
AS24482SG.GSHostingIPv4 IPv645
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv645
AS4637Telstra GlobalUnclassifiedIPv441
AS35280F5 Networks SARLHostingIPv441
AS13030Init7 (Switzerland) Ltd.HostingIPv63

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

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS31655, 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 3 exchanges across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
LINX LON1London, United Kingdom195.66.225.242925
London Network Access PointLondon, United Kingdom5.57.80.176316
LINX ManchesterManchester, United Kingdom195.66.244.20145

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.