asn.dev

Observed topology

AS16839 SNC

Upstreams 30 carry this network
Downstreams 0 this network carries
Adjacent (IPv4) 30
Adjacent (IPv6) 25

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS16839: 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 IPv61,630
AS6461Zayo BandwidthTransitIPv4 IPv61,415
AS8220COLT Technology Services Group LimitedHostingIPv4 IPv6725
AS812Rogers Communications Canada Inc.MobileIPv4 IPv6497
AS4826Vocus Connect International BackboneUnclassifiedIPv4 IPv6406
AS6939Hurricane Electric LLCTransitIPv4 IPv6345
AS1299Arelion Sweden ABTransitIPv4 IPv6322
AS9498BHARTI Airtel Ltd.MobileIPv4 IPv6318
AS13237euNetworks GmbHUnclassifiedIPv4 IPv6306
AS6327Shaw CommunicationsResidentialIPv4 IPv6273
AS577Bell CanadaMobileIPv4 IPv6226
AS3257GTT Communications Inc.TransitIPv4 IPv6217
AS174Cogent Communications, LLCTransitIPv4 IPv6185
AS2914NTT America, Inc.TransitIPv4 IPv6160
AS5400British Telecommunications LimitedUnclassifiedIPv4 IPv6141
AS7018AT&T Enterprises, LLCResidentialIPv4 IPv6112
AS7473Singapore Telecommunications LtdUnclassifiedIPv4 IPv6112
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6102
AS13786Seabras 1 USA, LLCUnclassifiedIPv4 IPv688
AS4637Telstra GlobalUnclassifiedIPv4 IPv684
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv658
AS28716Retelit Digital Services S.p.A.UnclassifiedIPv4 IPv656
AS7474SingTel Optus Pty LtdUnclassifiedIPv448
AS21949Beanfield Technologies Inc.UnclassifiedIPv435
AS9286KINXHostingIPv420
AS12552GlobalConnect ABUnclassifiedIPv413
AS3320Deutsche Telekom AGMobileIPv4 IPv613
AS2856British Telecommunications LimitedResidentialIPv4 IPv612
AS3549Level 3 Parent, LLCTransitIPv4 IPv610
AS16735ALGAR TELECOM S/AUnclassifiedIPv42

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 AS16839 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

55 shown

Every AS seen directly next to AS16839 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,630
AS6461Zayo BandwidthTransitIPv4 IPv61,415
AS8220COLT Technology Services Group LimitedHostingIPv4 IPv6725
AS812Rogers Communications Canada Inc.MobileIPv4 IPv6497
AS4826Vocus Connect International BackboneUnclassifiedIPv4 IPv6406
AS6939Hurricane Electric LLCTransitIPv4 IPv6345
AS1299Arelion Sweden ABTransitIPv4 IPv6322
AS9498BHARTI Airtel Ltd.MobileIPv4 IPv6318
AS13237euNetworks GmbHUnclassifiedIPv4 IPv6306
AS6327Shaw CommunicationsResidentialIPv4 IPv6273
AS577Bell CanadaMobileIPv4 IPv6226
AS3257GTT Communications Inc.TransitIPv4 IPv6217
AS174Cogent Communications, LLCTransitIPv4 IPv6185
AS2914NTT America, Inc.TransitIPv4 IPv6160
AS5400British Telecommunications LimitedUnclassifiedIPv4 IPv6141
AS7018AT&T Enterprises, LLCResidentialIPv4 IPv6112
AS7473Singapore Telecommunications LtdUnclassifiedIPv4 IPv6112
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6102
AS13786Seabras 1 USA, LLCUnclassifiedIPv4 IPv688
AS4637Telstra GlobalUnclassifiedIPv4 IPv684
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv658
AS28716Retelit Digital Services S.p.A.UnclassifiedIPv4 IPv656
AS7474SingTel Optus Pty LtdUnclassifiedIPv448
AS21949Beanfield Technologies Inc.UnclassifiedIPv435
AS9286KINXHostingIPv420
AS12552GlobalConnect ABUnclassifiedIPv413
AS3320Deutsche Telekom AGMobileIPv4 IPv613
AS2856British Telecommunications LimitedResidentialIPv4 IPv612
AS3549Level 3 Parent, LLCTransitIPv4 IPv610
AS16735ALGAR TELECOM S/AUnclassifiedIPv42

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 AS16839, 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 7 exchanges across 5 countries and 2 regions.

ExchangeLocationTheir addressMember ports
DE-CIX FrankfurtFrankfurt, Germany80.81.194.271,073
LINX LON1London, United Kingdom195.66.225.180925
AMS-IX AmsterdamAmsterdam, Netherlands80.249.214.54894
BroadBand Internet eXchange TokyoTokyo, Japan101.203.89.153359
DE-CIX DusseldorfDüsseldorf, Germany185.1.170.135226
BroadBand Internet eXchange OsakaOsaka, Japan218.100.9.122132
Internet Neutral Exchange Association CLG - LAN1Dublin, Ireland185.6.36.157115

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.