asn.dev

Observed topology

AS57043 HOSTKEY-AS HOSTKEY B.V.

Hosting RIPE Content

Upstreams 46 carry this network
Downstreams 19 this network carries
Adjacent (IPv4) 66
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 46

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 IPv615,054
AS174Cogent Communications, LLCTransitIPv4 IPv612,011
AS9002RETN LimitedUnclassifiedIPv4 IPv62,963
AS3257GTT Communications Inc.TransitIPv4 IPv62,721
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv61,281
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,044
AS59692IQWeb FZ-LLCUnclassifiedIPv4895
AS24482SG.GSHostingIPv4 IPv6585
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6531
AS49434FBW NETWORKS SASUnclassifiedIPv4468

All 46 upstreams →

Transit

Downstream networks

All 19

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 IPv63,416
AS200313IT WEB LTDUnclassifiedIPv4 IPv61,544
AS216154CLODO CLOUD SERVICE CO. L.L.CUnclassifiedIPv4 IPv61,512
AS212706LIVI HOSTING LTDHostingIPv4 IPv6924
AS207461HOSTING INDUSTRY LIMITEDUnclassifiedIPv4 IPv6393
AS211673Mynymbox Hosting LLCUnclassifiedIPv4 IPv6387
AS198178365.partners INCUnclassifiedIPv4312
AS216139Iron Hosting Centre LTDHostingIPv4 IPv6242
AS213459Snowd Security OUUnclassifiedIPv4118
AS59965Astralus GmbHUnclassifiedIPv4 IPv691

All 19 downstreams →

Adjacency

Adjacent networks

All 70

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

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv618,564
AS174Cogent Communications, LLCTransitIPv4 IPv614,340
AS9002RETN LimitedUnclassifiedIPv4 IPv64,349
AS3257GTT Communications Inc.TransitIPv4 IPv63,487
AS26383Baxet Group Inc.UnclassifiedIPv4 IPv63,416
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv61,584
AS200313IT WEB LTDUnclassifiedIPv4 IPv61,544
AS216154CLODO CLOUD SERVICE CO. L.L.CUnclassifiedIPv4 IPv61,512
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,117
AS212706LIVI HOSTING LTDHostingIPv4 IPv6924

All 70 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.