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

AS56550

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS56550

NameSTELCORE

OrganisationSTEL S.R.L.

Country –

RIRRIPE NCC

Allocated16.03.2011

Abuse contactabuse@stel.it

Network Overview

IPv4 Prefixes18

IPv6 Prefixes0

Upstreams (Transit)12

Downstreams (Customers)1

BGP Peers14

AS Path (BGP neighbours)

Upstreams (Transit)

AS1267WIND TRE S.P.A.AS137409GSL Networks Pty LTD AS174Cogent Communications, LLC AS211886STEL S.R.L.AS2593Universita di Padova AS3257GTT Communications Inc.+6

AS56550STELCORE

Downstreams (Customers)

AS42658STEL S.R.L.

Upstreams (Transit) (12)

AS1267WIND TRE S.P.A.

AS137409GSL Networks Pty LTD

AS174Cogent Communications, LLC

AS211886STEL S.R.L.

AS2593Universita di Padova

AS3257GTT Communications Inc.

AS4455IX Reach Ltd

AS5405Inter.link GmbH

AS60171AFR-IX TELECOM S.A.

AS6204INTERKVM HOST SRL

AS6939Hurricane Electric LLC

AS8218Zayo Europe

Downstreams (Customers) (1)

AS42658STEL S.R.L.

IPv4 Prefixes (18)

94.177.127.0/24

93.117.172.0/23

93.115.62.0/23

128.0.122.0/23

109.230.212.0/24

95.142.208.0/21

89.32.186.0/23

89.33.133.0/24

185.157.52.0/22

185.8.24.0/22

31.177.40.0/21

93.117.152.0/23

128.0.124.0/22

31.214.153.0/24

46.102.188.0/23

31.14.28.0/24

185.163.172.0/22

188.241.154.0/24

BGP Peers (14)

AS12637Seeweb s.r.l.

AS12779IT.Gate S.p.A.

AS13237euNetworks GmbH

AS15605Connesi S.p.A.

AS24482SG.GS

AS24961WIIT AG (fka. myLoc Managed IT AG)

AS49544i3D.net B.V

AS49605Digital Telecommunication Services S.r.l.

AS49709Videobyte S.r.l.

AS50877Airbeam S.r.l.

AS51185MainStreaming SpA

AS57111NOVA NETWORKS S.R.L.

AS59919

AS8660

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.