SUBNET.IM

AS12423Nicolaus Copernicus University in Torun

PolandRegistryRIPE NCC

At a glance

IPv4 prefixes

1

IPv6 prefixes

1

IPv4 addresses

32.8k

IPv6 /64s

4.3B

Upstream graph

The networks AS12423 is seen behind, one and two hops out, drawn from real AS paths.

AS12423Toward the internet core
Upstream graph for AS12423: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12423Nicolaus Copernic…This networkAS8501Institute of Bioo…AS196844Institute of Bioo…AS2603NORDUnetAS3356Lumen (Level 3)AS7713PT Telkom Indones…AS18106Viewqwest Pte Ltd

Networks observed one and two hops upstream of AS12423 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS12423
NetworkCountryRelationshipPathsVantage pts
AS8501Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterPLPeer105105
AS196844Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterPLPeer3434

Prefixes

The largest blocks AS12423 originates, widest first.

Largest prefixes originated by AS12423
PrefixAddressesVisibility
158.75.0.0/1732.8k79/80
2a03:1380::/324.3B × /6460/62

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