asn.dev

Observed topology

AS44103 BAKKER-IT-AS The Mastermind Holding B.V.

Unclassified RIPE

Upstreams 14 carry this network
Downstreams 22 this network carries
Adjacent (IPv4) 20
Adjacent (IPv6) 33
Upstream graph Who carries AS44103, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS44103 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 14

Networks observed carrying traffic for AS44103: 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
AS200461Ian David KlemmUnclassifiedIPv4 IPv6269
AS6939Hurricane Electric LLCTransitIPv4 IPv6196
AS5405Inter.link GmbHUnclassifiedIPv4 IPv6140
AS6204INTERKVM HOST SRLUnclassifiedIPv4 IPv693
AS50673Serverius Holding B.V.UnclassifiedIPv460
AS49127Asimo Networks B.V.HostingIPv4 IPv645
AS50304Blix Solutions ASUnclassifiedIPv4 IPv624
AS24482SG.GSHostingIPv4 IPv613
AS58057Securebit AGUnclassifiedIPv4 IPv613
AS204092Association GRIFONUnclassifiedIPv4 IPv613

All 14 upstreams →

Transit

Downstream networks

All 22

Networks for which AS44103 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS212085Alexander BruegmannUnclassifiedIPv4 IPv6203
AS214731ETO Networks LimitedUnclassifiedIPv6148
AS204830Jelle KaufmannUnclassifiedIPv4 IPv6131
AS214723Maria-Elisabeth Annabel HeijkoopUnclassifiedIPv6123
AS211041Connectra B.V.ResidentialIPv4 IPv677
AS205398Tyler ObrienUnclassifiedIPv674
AS205563Marc GomezUnclassifiedIPv674
AS215553Stichting VaartFiberUnclassifiedIPv4 IPv674
AS213253MAEL GRAMAINUnclassifiedIPv666
AS202855Galactic Group B.V.UnclassifiedIPv4 IPv647

All 22 downstreams →

Adjacency

Adjacent networks

All 37

Every AS seen directly next to AS44103 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6820
AS200461Ian David KlemmUnclassifiedIPv4 IPv6376
AS5405Inter.link GmbHUnclassifiedIPv4 IPv6342
AS212085Alexander BruegmannUnclassifiedIPv4 IPv6203
AS6204INTERKVM HOST SRLUnclassifiedIPv4 IPv6189
AS214731ETO Networks LimitedUnclassifiedIPv6148
AS204830Jelle KaufmannUnclassifiedIPv4 IPv6131
AS214723Maria-Elisabeth Annabel HeijkoopUnclassifiedIPv6123
AS50673Serverius Holding B.V.UnclassifiedIPv4 IPv6122
AS49127Asimo Networks B.V.HostingIPv4 IPv6103

All 37 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.03M 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.