SUBNET.IM

AS1921ipcom GmbH

AustriaRegistryRIPE NCC

At a glance

IPv4 prefixes

15

IPv6 prefixes

15

IPv4 addresses

3.8k

IPv6 /64s

983k

Upstream graph

The networks AS1921 is seen behind, one and two hops out, drawn from real AS paths.

Networks observed one and two hops upstream of AS1921 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

197

adjacent networks

Upstreams
4925%
Peers
14574%
Downstreams
32%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 49.

Upstreams of AS1921
NetworkCountryRelationshipPathsVantage pts
AS20473The Constant Company, LLCUSPeer54983
AS44066firstcolo GmbHDEPeer16524
AS56655Gigahost ASNOPeer142142
AS8849Melbikomas UABLTPeer12627
AS6939Hurricane Electric LLCUSPeer7741
AS29222Infomaniak Network SACHPeer528
AS5459London Internet Exchange Ltd.GBPeer4644
AS49544i3D.net B.VNLPeer435
AS7195EdgeUnoCOPeer408
AS199524Gcore S.A.LUPeer288

Prefixes

All 30

The largest blocks AS1921 originates, widest first.

Largest prefixes originated by AS1921
PrefixAddressesVisibility
91.237.67.0/2425680/80
176.97.158.0/2425615/80
185.80.188.0/2425664/80
185.80.191.0/2425680/80
185.102.12.0/2425679/80
185.167.176.0/2425615/80
192.174.68.0/2425680/80
193.46.128.0/2425663/80
193.46.133.0/2425663/80
193.46.134.0/2425680/80

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.