asn.dev

Observed topology

AS134148 SINGAREN-GIX-AS-AP-2 SingAREN

Upstreams 8 carry this network
Downstreams 10 this network carries
Adjacent (IPv4) 18
Adjacent (IPv6) 11

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS134148: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv650
AS136968SingARENEducationIPv448
AS23855Singapore Advanced Research and Education NetworkUnclassifiedIPv4 IPv648
AS24482SG.GSHostingIPv4 IPv63
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv63
AS293ESnetUnclassifiedIPv42
AS38001NewMedia Express Pte LtdHostingIPv42
AS35889University of HawaiiUnclassifiedIPv42

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 AS134148 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS23767A-STARUnclassifiedIPv4 IPv676
AS17617Nanyang PolytechnicUnclassifiedIPv4 IPv656
AS131475Singapore Institute of TechnologyUnclassifiedIPv420
AS9419Nanyang Technological UniversityEducationIPv410
AS4777Asia Pacific Network Information CentreUnclassifiedIPv4 IPv66
AS132398Science and Engineering InstitutesUnclassifiedIPv4 IPv65
AS7500WIDE ProjectHostingIPv42
AS23855Singapore Advanced Research and Education NetworkUnclassifiedIPv62
AS141682APIDT Infrastructure Pty LtdUnclassifiedIPv41
AS17579KISTIEducationIPv61

Adjacency

Adjacent networks

31 shown

Every AS seen directly next to AS134148 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS293ESnetUnclassifiedIPv4638
AS23855Singapore Advanced Research and Education NetworkUnclassifiedIPv4 IPv6579
AS141682APIDT Infrastructure Pty LtdUnclassifiedIPv4 IPv6389
AS6939Hurricane Electric LLCTransitIPv4 IPv6153
AS23767A-STARUnclassifiedIPv4 IPv676
AS136968SingARENEducationIPv474
AS17617Nanyang PolytechnicUnclassifiedIPv4 IPv656
AS17579KISTIEducationIPv4 IPv626
AS131475Singapore Institute of TechnologyUnclassifiedIPv420
AS38001NewMedia Express Pte LtdHostingIPv416
AS24482SG.GSHostingIPv4 IPv614
AS4777Asia Pacific Network Information CentreUnclassifiedIPv4 IPv611
AS9419Nanyang Technological UniversityEducationIPv410
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv610
AS7610NUS GigapopEducationIPv45
AS132398Science and Engineering InstitutesUnclassifiedIPv4 IPv65
AS61292Blix Group ASUnclassifiedIPv64
AS35889University of HawaiiUnclassifiedIPv44
AS7500WIDE ProjectHostingIPv42

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 AS134148, 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.

ExchangeLocationTheir addressMember ports
Singapore Internet ExchangeSingapore, Singapore103.16.102.242273

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.