An Autonomous System Number (ASN) is a unique number assigned to a network in global internet routing. Every provider that participates directly on the internet has its own ASN (e.g. AS15169 for Google).

What are upstreams, peers and prefixes?

Upstreams are transit providers through which an AS reaches the internet. Peers are networks with direct traffic exchange. Prefixes are the IP address ranges the AS announces via BGP.

Where does the ASN data come from?

The data comes from the official RDAP services of the RIRs (RIPE, ARIN, etc.) and from RIPEstat (prefixes and neighbour ASNs).

ASN Lookup – Networks, Upstreams and Prefixes

AS61094

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS61094

NameCRATIS-AS

Organisationhr-cratis-1-mnt

Country –

RIRRIPE NCC

Allocated10.06.2015

Abuse contactabuse@cratis.hr

Network Overview

IPv4 Prefixes14

IPv6 Prefixes0

Upstreams (Transit)8

Downstreams (Customers)2

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS1299Arelion (fka. Telia Carrier)AS174Cogent Communications, LLC AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd AS3223Voxility LLP AS44306OMONIA d.o.o.AS5391Hrvatski Telekom d.d.+2

AS61094CRATIS-AS

Downstreams (Customers)

AS212550Sedmi Odjel d.o.o.AS41454Optika Kabel TV d.o.o.

Upstreams (Transit) (8)

AS1299Arelion (fka. Telia Carrier)

AS174Cogent Communications, LLC

AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd

AS3223Voxility LLP

AS44306OMONIA d.o.o.

AS5391Hrvatski Telekom d.d.

AS6939Hurricane Electric LLC

AS9002RETN Limited

Downstreams (Customers) (2)

AS212550Sedmi Odjel d.o.o.

AS41454Optika Kabel TV d.o.o.

IPv4 Prefixes (14)

185.187.136.0/23

185.171.180.0/22

185.92.124.0/24

185.245.12.0/22

185.111.191.0/24

185.143.192.0/24

185.111.190.0/23

185.143.192.0/22

194.56.72.0/23

178.23.184.0/24

185.245.14.0/24

194.56.75.0/24

194.56.74.0/24

185.103.216.0/22

My IP ASN Lookup IP Lookup WHOIS DNS Lookup

What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.