asn.dev

Observed topology

AS4851 HOSTNETWORKS-AS-AU-AP - Host Networks

Hosting APNIC Content

Upstreams 1 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 9
Adjacent (IPv6) 2
Upstream graph Who carries AS4851, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS4851 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS4851: 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
AS639565G NETWORK OPERATIONS PTY LTDUnclassifiedIPv4 IPv6850

Transit

Downstream networks

inferred

Networks for which AS4851 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS23727Managed Solutions Internet AS Internet Service ProviderUnclassifiedIPv4290
AS58929Datbury Pty LtdUnclassifiedIPv4290
AS132498ASPEDIA AUSTRALIA PTY LTDUnclassifiedIPv458
AS150438Secure-ISS Holdings Pty LtdUnclassifiedIPv458
AS139279OPTIMISED SOLUTIONSUnclassifiedIPv4 IPv625
AS56057Entity Data Pty LimitedUnclassifiedIPv419
AS198125Jacob Ian Wicks Trading as CONXTUnclassifiedIPv414

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS4851 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS639565G NETWORK OPERATIONS PTY LTDUnclassifiedIPv4 IPv61,603
AS23727Managed Solutions Internet AS Internet Service ProviderUnclassifiedIPv4290
AS58929Datbury Pty LtdUnclassifiedIPv4290
AS132498ASPEDIA AUSTRALIA PTY LTDUnclassifiedIPv458
AS150438Secure-ISS Holdings Pty LtdUnclassifiedIPv458
AS139279OPTIMISED SOLUTIONSUnclassifiedIPv4 IPv625
AS56057Entity Data Pty LimitedUnclassifiedIPv419
AS198125Jacob Ian Wicks Trading as CONXTUnclassifiedIPv414
AS4764Aussie BroadbandResidentialIPv41

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-02 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.44M 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.