asn.dev

Observed topology

AS57043 HOSTKEY-AS HOSTKEY B.V.

Hosting RIPE

Upstreams 45 carry this network
Downstreams 20 this network carries
Adjacent (IPv4) 65
Adjacent (IPv6) 31
Upstream graph Who carries AS57043, and who carries them, drawn as a map up to the transit-free core. 11 exchanges Where AS57043 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 45

Networks observed carrying traffic for AS57043: 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 IPv614,371
AS174Cogent Communications, LLCTransitIPv4 IPv611,477
AS9002RETN LimitedUnclassifiedIPv4 IPv62,720
AS3257GTT Communications Inc.TransitIPv4 IPv62,592
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv61,124
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,036
AS59692IQWeb FZ-LLCUnclassifiedIPv4871
AS24482SG.GSHostingIPv4 IPv6561
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6510
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv6425

All 45 upstreams →

Transit

Downstream networks

All 20

Networks for which AS57043 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS26383Baxet Group Inc.UnclassifiedIPv4 IPv63,404
AS200313IT WEB LTDUnclassifiedIPv4 IPv61,563
AS216154CLODO CLOUD SERVICE CO. L.L.CUnclassifiedIPv4 IPv61,496
AS212706LIVI HOSTING LTDHostingIPv4901
AS207461HOSTING INDUSTRY LIMITEDUnclassifiedIPv4 IPv6392
AS211673Mynymbox Hosting LLCUnclassifiedIPv4 IPv6388
AS216139Iron Hosting Centre LTDHostingIPv4 IPv6369
AS198178365.partners INCUnclassifiedIPv4312
AS213459Snowd Security OUUnclassifiedIPv4120
AS59965Astralus GmbHUnclassifiedIPv4 IPv692

All 20 downstreams →

Adjacency

Adjacent networks

All 71

Every AS seen directly next to AS57043 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv617,916
AS174Cogent Communications, LLCTransitIPv4 IPv613,886
AS9002RETN LimitedUnclassifiedIPv4 IPv64,126
AS26383Baxet Group Inc.UnclassifiedIPv4 IPv63,404
AS3257GTT Communications Inc.TransitIPv4 IPv63,375
AS200313IT WEB LTDUnclassifiedIPv4 IPv61,563
AS216154CLODO CLOUD SERVICE CO. L.L.CUnclassifiedIPv4 IPv61,496
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv61,426
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,109
AS212706LIVI HOSTING LTDHostingIPv4901

All 71 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-03 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.45M 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.