asn.dev

Observed topology

AS152194 CTGSERVERLIMITED-AS-AP CTG Server Limited

Upstreams 17 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 17
Adjacent (IPv6) 8

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS152194: 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
AS2914NTT America, Inc.TransitIPv4 IPv621,983
AS3491PCCW Global (HK) Ltd.TransitIPv46,027
AS17476CloudRadium (HK) LimitedResidentialIPv44,439
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv43,072
AS6939Hurricane Electric LLCTransitIPv4 IPv6594
AS51847Nearoute LimitedResidentialIPv4577
AS24482SG.GSHostingIPv4 IPv6457
AS38001NewMedia Express Pte LtdHostingIPv4 IPv6450
AS57463NetIX Communications JSCUnclassifiedIPv4447
AS64050BGP Network LimitedHostingIPv4 IPv6440
AS58643Photon Link LimitedUnclassifiedIPv434
AS33891Core-Backbone GmbHHostingIPv428
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv618
AS8359MTS PJSCMobileIPv44
AS61292Blix Group ASUnclassifiedIPv62
AS7575Australian Academic and Research Network (AARNet)EducationIPv42
AS35280F5 Networks SARLHostingIPv61

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 AS152194 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS64050BGP Network LimitedHostingIPv41,010
AS152711Suike Information Technology SiChuan Co., LtdUnclassifiedIPv4236
AS63902SHINE TELECOM CO., LTD.UnclassifiedIPv4118

Adjacency

Adjacent networks

27 shown

Every AS seen directly next to AS152194 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv622,540
AS3491PCCW Global (HK) Ltd.TransitIPv46,718
AS17476CloudRadium (HK) LimitedResidentialIPv44,441
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv43,153
AS64050BGP Network LimitedHostingIPv4 IPv61,450
AS6939Hurricane Electric LLCTransitIPv4 IPv6603
AS51847Nearoute LimitedResidentialIPv4577
AS24482SG.GSHostingIPv4 IPv6486
AS38001NewMedia Express Pte LtdHostingIPv4 IPv6466
AS57463NetIX Communications JSCUnclassifiedIPv4457
AS152711Suike Information Technology SiChuan Co., LtdUnclassifiedIPv4236
AS63902SHINE TELECOM CO., LTD.UnclassifiedIPv4118
AS58643Photon Link LimitedUnclassifiedIPv434
AS33891Core-Backbone GmbHHostingIPv428
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv619
AS8359MTS PJSCMobileIPv44
AS7575Australian Academic and Research Network (AARNet)EducationIPv42
AS61292Blix Group ASUnclassifiedIPv62
AS35280F5 Networks SARLHostingIPv61

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 AS152194, 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 2 countries and 1 region.

ExchangeLocationTheir addressMember ports
Equinix Internet Exchange SingaporeSingapore, Singapore27.111.231.48490
Hong Kong Internet ExchangeHong Kong, China123.255.90.19307
Singapore Internet ExchangeSingapore, Singapore103.16.103.16273

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.