asn.dev

Observed topology

AS9457 DREAMX-AS DREAMLINE CO.

Upstreams 7 carry this network
Downstreams 40 this network carries
Adjacent (IPv4) 49
Adjacent (IPv6) 7

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS9457: 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
AS174Cogent Communications, LLCTransitIPv4 IPv65,182
AS6939Hurricane Electric LLCTransitIPv4832
AS3786LG DACOM CorporationUnclassifiedIPv4246
AS2914NTT America, Inc.TransitIPv4216
AS24482SG.GSHostingIPv472
AS9957KINXHostingIPv438
AS9002RETN LimitedUnclassifiedIPv410

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 AS9457 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS38676flexnetworksUnclassifiedIPv47,418
AS17878DREAMMARK1UnclassifiedIPv43,420
AS17608ABNUnclassifiedIPv42,576
AS10054CMB Kwangju BroadcastingResidentialIPv41,920
AS38684CMB Daejeon Broadcasting Co,.LtdUnclassifiedIPv41,823
AS38133CMBUnclassifiedIPv41,191
AS38661abcleUnclassifiedIPv41,082
AS38680CMBUnclassifiedIPv4912
AS9781GREEN CABLE TELEVISION STATIONResidentialIPv4840
AS17583Keumgang Cable NetworkUnclassifiedIPv4806
AS21859Zenlayer IncHostingIPv4 IPv6756
AS9757CMB DONDAEMOON BROADCASTINGResidentialIPv4724
AS38387CMB Sejong Broadcasting Co,.LtdUnclassifiedIPv4672
AS38673Korea Cable TV Kwangju BroadcastingUnclassifiedIPv4564
AS18168CMB TAEGU BROADCAST SUSEONGUnclassifiedIPv4444
AS139341ACEHostingIPv4 IPv6419
AS45374CCSUnclassifiedIPv4401
AS38690HyosungITXUnclassifiedIPv4361
AS17838HYUNDAI HOMESHOPPINGUnclassifiedIPv4252
AS152225VNTGUnclassifiedIPv4228
AS138199TransatelUnclassifiedIPv4 IPv6224
AS23908IIACUnclassifiedIPv4215
AS9771Media SynnaraHostingIPv4180
AS38424KOREA CABLE TELECOMUnclassifiedIPv4176
AS38101Yulchon LLCUnclassifiedIPv4129
AS55623Korea Insurance Development InstituteUnclassifiedIPv4120
AS9640Korea Internet Security AgencyUnclassifiedIPv4105
AS199524G-Core Labs S.A.HostingIPv4 IPv668
AS17867KOREA BANKING INSTITUTEUnclassifiedIPv459
AS16477Nielsen Consumer LLCUnclassifiedIPv458
AS131839mmaaUnclassifiedIPv443
AS17876Ahnlab, Inc.UnclassifiedIPv424
AS10036DLIVEResidentialIPv424
AS38125Korea Expressway CorporationUnclassifiedIPv416
AS36819MELALEUCA INC.UnclassifiedIPv415
AS38434POLARISOFFICEUnclassifiedIPv412
AS10056Hyundai Marin Fire InsuranceUnclassifiedIPv410
AS10061Financial Supervisory ServiceUnclassifiedIPv45
AS10173KSNET.IncUnclassifiedIPv42
AS20940Akamai International B.V.HostingIPv41

Adjacency

Adjacent networks

56 shown

Every AS seen directly next to AS9457 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv617,649
AS2914NTT America, Inc.TransitIPv4 IPv614,316
AS38676flexnetworksUnclassifiedIPv47,418
AS17878DREAMMARK1UnclassifiedIPv43,908
AS17608ABNUnclassifiedIPv42,576
AS10054CMB Kwangju BroadcastingResidentialIPv41,920
AS38684CMB Daejeon Broadcasting Co,.LtdUnclassifiedIPv41,823
AS4637Telstra GlobalUnclassifiedIPv4 IPv61,797
AS6939Hurricane Electric LLCTransitIPv41,320
AS38661abcleUnclassifiedIPv41,267
AS38133CMBUnclassifiedIPv41,191
AS21859Zenlayer IncHostingIPv4 IPv6916
AS38680CMBUnclassifiedIPv4912
AS9781GREEN CABLE TELEVISION STATIONResidentialIPv4840
AS17583Keumgang Cable NetworkUnclassifiedIPv4806
AS9757CMB DONDAEMOON BROADCASTINGResidentialIPv4724
AS38387CMB Sejong Broadcasting Co,.LtdUnclassifiedIPv4672
AS38673Korea Cable TV Kwangju BroadcastingUnclassifiedIPv4564
AS18168CMB TAEGU BROADCAST SUSEONGUnclassifiedIPv4454
AS139341ACEHostingIPv4 IPv6421
AS45374CCSUnclassifiedIPv4401
AS38690HyosungITXUnclassifiedIPv4361
AS9957KINXHostingIPv4277
AS17838HYUNDAI HOMESHOPPINGUnclassifiedIPv4252
AS3786LG DACOM CorporationUnclassifiedIPv4246
AS152225VNTGUnclassifiedIPv4228
AS138199TransatelUnclassifiedIPv4 IPv6224
AS23908IIACUnclassifiedIPv4215
AS9771Media SynnaraHostingIPv4180
AS38424KOREA CABLE TELECOMUnclassifiedIPv4176
AS38101Yulchon LLCUnclassifiedIPv4129
AS55623Korea Insurance Development InstituteUnclassifiedIPv4120
AS24482SG.GSHostingIPv4113
AS9640Korea Internet Security AgencyUnclassifiedIPv4105
AS199524G-Core Labs S.A.HostingIPv4 IPv668
AS17867KOREA BANKING INSTITUTEUnclassifiedIPv459
AS16477Nielsen Consumer LLCUnclassifiedIPv458
AS131839mmaaUnclassifiedIPv443
AS17876Ahnlab, Inc.UnclassifiedIPv424
AS10036DLIVEResidentialIPv424
AS38125Korea Expressway CorporationUnclassifiedIPv416
AS36819MELALEUCA INC.UnclassifiedIPv415
AS38434POLARISOFFICEUnclassifiedIPv412
AS9002RETN LimitedUnclassifiedIPv412
AS10056Hyundai Marin Fire InsuranceUnclassifiedIPv410
AS9318SK Broadband Co LtdUnclassifiedIPv46
AS10061Financial Supervisory ServiceUnclassifiedIPv45
AS10173KSNET.IncUnclassifiedIPv42
AS20940Akamai International B.V.HostingIPv41

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 AS9457, 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
BroadBand Internet eXchange TokyoTokyo, Japan101.203.90.155359
Korea Internet Neutral Exchange KINXSeoul, South Korea139.150.100.2464
Equinix Internet Exchange SeoulSeoul, South Korea103.140.210.712

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.