asn.dev

Observed topology

AS47720 CIX-AS Cork Internet Exchange Limited

Unclassified RIPE NSP

Upstreams 19 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 25
Adjacent (IPv6) 15
Upstream graph Who carries AS47720, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS47720 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 19

Networks observed carrying traffic for AS47720: 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
AS3257GTT Communications Inc.TransitIPv4 IPv6229
AS8220COLT Technology Services Group LimitedHostingIPv4205
AS6939Hurricane Electric LLCTransitIPv4 IPv6194
AS1273IDDQD-ASBusinessIPv4 IPv684
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv629
AS50304Blix Solutions ASUnclassifiedIPv418
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv611
AS24482SG.GSHostingIPv4 IPv611
AS48185team.blue NVUnclassifiedIPv4 IPv611
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv611

All 19 upstreams →

Transit

Downstream networks

inferred

Networks for which AS47720 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS15405East Cork Broadband LimitedUnclassifiedIPv4 IPv6327
AS196737Airwave InternetUnclassifiedIPv4232
AS42953Internet Neutral Exchange Association Company Limited By GuaranteeUnclassifiedIPv4 IPv6152
AS205967Sleepless Server Solutions Ltd.UnclassifiedIPv4 IPv695
AS201902Bicom Systems LimitedUnclassifiedIPv459
AS44358Kauno Technologijos UniversitetasUnclassifiedIPv4 IPv632
AS47680EOBO Ltd T/A BBnetUnclassifiedIPv431
AS43192Ajisko Ltd t/a Integrated Media SolutionsUnclassifiedIPv42

Adjacency

Adjacent networks

All 27

Every AS seen directly next to AS47720 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS8220COLT Technology Services Group LimitedHostingIPv4448
AS3257GTT Communications Inc.TransitIPv4 IPv6409
AS6939Hurricane Electric LLCTransitIPv4 IPv6394
AS15405East Cork Broadband LimitedUnclassifiedIPv4 IPv6327
AS196737Airwave InternetUnclassifiedIPv4232
AS1273IDDQD-ASBusinessIPv4 IPv6225
AS42953Internet Neutral Exchange Association Company Limited By GuaranteeUnclassifiedIPv4 IPv6152
AS205967Sleepless Server Solutions Ltd.UnclassifiedIPv4 IPv695
AS47680EOBO Ltd T/A BBnetUnclassifiedIPv493
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv672

All 27 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

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. 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.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.