asn.dev

Observed topology

AS23576 NHN-AS-KR NAVER Cloud Corp.

Upstreams 39 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 41
Adjacent (IPv6) 0

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS23576: 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.TransitIPv41,357
AS174Cogent Communications, LLCTransitIPv41,022
AS1299Arelion Sweden ABTransitIPv4911
AS6939Hurricane Electric LLCTransitIPv4776
AS3356Level 3 Parent, LLCTransitIPv4742
AS3786LG DACOM CorporationUnclassifiedIPv4734
AS2516KDDI CORPORATIONMobileIPv4659
AS3257GTT Communications Inc.TransitIPv4580
AS4766Korea TelecomMobileIPv4573
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4401
AS34549meerfarbig GmbH & Co. KGHostingIPv4295
AS9318SK Broadband Co LtdUnclassifiedIPv4199
AS50304Blix Solutions ASUnclassifiedIPv4190
AS7473Singapore Telecommunications LtdUnclassifiedIPv4141
AS24482SG.GSHostingIPv4127
AS57463NetIX Communications JSCUnclassifiedIPv4115
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4106
AS20485Joint Stock Company TransTeleComUnclassifiedIPv498
AS37721Virtual Technologies & SolutionsResidentialIPv495
AS37100SEACOM LimitedUnclassifiedIPv495
AS12552GlobalConnect ABUnclassifiedIPv495
AS48362Stadtwerke FeldkirchResidentialIPv495
AS3741Dimension DataUnclassifiedIPv495
AS12779IT.Gate S.p.A.UnclassifiedIPv494
AS50300CustodianDC LimitedUnclassifiedIPv494
AS212024Marc SchmittUnclassifiedIPv494
AS34019Hivane AssociationUnclassifiedIPv493
AS1103SURF B.V.UnclassifiedIPv493
AS1836green.ch AGResidentialIPv486
AS38001NewMedia Express Pte LtdHostingIPv479
AS3491PCCW Global (HK) Ltd.TransitIPv468
AS3320Deutsche Telekom AGMobileIPv445
AS33891Core-Backbone GmbHHostingIPv414
AS293ESnetUnclassifiedIPv48
AS50673Serverius Holding B.V.UnclassifiedIPv42
AS20766Association "Gitoyen"UnclassifiedIPv41
AS34927iFog GmbHHostingIPv41
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv41
AS48185team.blue NVUnclassifiedIPv41

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 AS23576 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS135354NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD.UnclassifiedIPv44,014

Adjacency

Adjacent networks

41 shown

Every AS seen directly next to AS23576 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS135354NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD.UnclassifiedIPv44,014
AS2914NTT America, Inc.TransitIPv42,472
AS2516KDDI CORPORATIONMobileIPv42,022
AS174Cogent Communications, LLCTransitIPv41,238
AS1299Arelion Sweden ABTransitIPv41,132
AS3356Level 3 Parent, LLCTransitIPv4977
AS6939Hurricane Electric LLCTransitIPv4922
AS3786LG DACOM CorporationUnclassifiedIPv4734
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4707
AS3257GTT Communications Inc.TransitIPv4660
AS4766Korea TelecomMobileIPv4573
AS34549meerfarbig GmbH & Co. KGHostingIPv4322
AS7473Singapore Telecommunications LtdUnclassifiedIPv4259
AS9318SK Broadband Co LtdUnclassifiedIPv4205
AS50304Blix Solutions ASUnclassifiedIPv4190
AS24482SG.GSHostingIPv4153
AS57463NetIX Communications JSCUnclassifiedIPv4125
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4116
AS20485Joint Stock Company TransTeleComUnclassifiedIPv4107
AS12552GlobalConnect ABUnclassifiedIPv4104
AS37721Virtual Technologies & SolutionsResidentialIPv4104
AS37100SEACOM LimitedUnclassifiedIPv4104
AS48362Stadtwerke FeldkirchResidentialIPv4104
AS12779IT.Gate S.p.A.UnclassifiedIPv4103
AS34019Hivane AssociationUnclassifiedIPv4102
AS1103SURF B.V.UnclassifiedIPv4102
AS212024Marc SchmittUnclassifiedIPv4101
AS1836green.ch AGResidentialIPv495
AS3741Dimension DataUnclassifiedIPv495
AS50300CustodianDC LimitedUnclassifiedIPv494
AS38001NewMedia Express Pte LtdHostingIPv480
AS3491PCCW Global (HK) Ltd.TransitIPv468
AS3320Deutsche Telekom AGMobileIPv458
AS33891Core-Backbone GmbHHostingIPv430
AS293ESnetUnclassifiedIPv417
AS9304HGC Global Communications LimitedHostingIPv48
AS50673Serverius Holding B.V.UnclassifiedIPv42
AS34927iFog GmbHHostingIPv41
AS20766Association "Gitoyen"UnclassifiedIPv41
AS48185team.blue NVUnclassifiedIPv41
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv41

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 AS23576, 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 9 exchanges across 8 countries and 3 regions.

ExchangeLocationTheir addressMember ports
DE-CIX FrankfurtFrankfurt, Germany80.81.193.481,073
LINX LON1London, United Kingdom195.66.226.173925
AMS-IX AmsterdamAmsterdam, Netherlands80.249.211.220894
Equinix Internet Exchange SingaporeSingapore, Singapore27.111.228.165490
BroadBand Internet eXchange TokyoTokyo, Japan101.203.90.95359
Hong Kong Internet ExchangeHong Kong, China123.255.90.141307
New York International Internet ExchangeNew York, United States198.32.160.158217
Equinix Internet Exchange San Jose (Bay Area)San Jose, United States206.223.116.134193
Korea Internet Neutral Exchange KINXSeoul, South Korea139.150.100.9164

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.