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

AS21309

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS21309

NameCASAWEB-AS

OrganisationCASAWEB-MNT

Country –

RIRRIPE NCC

Allocated19.07.2002

Abuse contactabuse.herabit@gruppohera.it

Network Overview

IPv4 Prefixes57

IPv6 Prefixes1

Upstreams (Transit)23

Downstreams (Customers)10

BGP Peers28

AS Path (BGP neighbours)

Upstreams (Transit)

AS13030Init7 (Switzerland) Ltd.AS137409GSL Networks Pty LTD AS14840BR.DIGITAL AS15830Equinix, Inc.AS174Cogent Communications, LLC AS22356Durand do Brasil Ltda+17

AS21309CASAWEB-AS

Downstreams (Customers)

AS15923Logos S.P.A.AS197807Eos sistemi s.r.l.AS207157CAME S.P.A.AS211102Previnet S.p.A.AS214164Interporto Padova S.p.A.AS31495HERABIT S.p.A.+4

Upstreams (Transit) (23)

AS13030Init7 (Switzerland) Ltd.

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS15830Equinix, Inc.

AS174Cogent Communications, LLC

AS22356Durand do Brasil Ltda

AS24961WIIT AG (fka. myLoc Managed IT AG)

AS2593Universita di Padova

AS263444Open X Tecnologia Ltda

AS264409Huge Networks

AS28716Retelit Digital Services S.p.A.

AS31543myNet GmbH

Downstreams (Customers) (10)

AS15923Logos S.P.A.

AS197807Eos sistemi s.r.l.

AS207157CAME S.P.A.

AS211102Previnet S.p.A.

AS214164Interporto Padova S.p.A.

AS31495HERABIT S.p.A.

AS35514GEOX S.P.A.

AS42933Aeroporto G. Marconi di Bologna s.p.a.

AS49535E-Mind Srl

AS8884CRIF S.p.A.

IPv4 Prefixes (57)

80.86.144.0/22

188.125.122.0/24

213.174.160.0/21

77.89.32.0/20

80.86.156.0/22

86.110.128.0/21

86.110.136.0/21

213.209.208.0/20

86.110.144.0/20

185.182.198.0/23

83.216.168.0/21

83.216.176.0/20

188.125.108.0/22

185.182.196.0/23

83.216.160.0/20

86.110.128.0/19

213.209.240.0/20

5.63.136.0/21

213.209.192.0/20

77.89.16.0/20

86.110.144.0/21

80.86.152.0/22

213.174.176.0/21

77.89.0.0/20

185.123.8.0/22

83.216.176.0/21

213.209.224.0/20

77.89.0.0/19

188.125.116.0/22

31.216.240.0/22

213.174.160.0/20

77.89.48.0/20

83.216.160.0/21

213.174.184.0/21

188.125.120.0/22

188.125.124.0/22

213.174.176.0/20

83.216.184.0/21

185.239.96.0/22

86.110.128.0/20

188.125.96.0/22

188.125.104.0/22

83.216.160.0/19

213.209.224.0/19

31.216.248.0/22

213.209.192.0/19

213.174.160.0/19

213.174.168.0/21

31.216.252.0/22

80.86.148.0/22

77.89.0.0/18

213.209.192.0/18

31.216.244.0/22

86.110.152.0/21

77.89.32.0/19

188.125.112.0/22

188.125.100.0/22

IPv6 Prefixes (1)

2a03:c380::/32

BGP Peers (28)

AS12637Seeweb s.r.l.

AS12779IT.Gate S.p.A.

AS13237euNetworks GmbH

AS15605Connesi S.p.A.

AS198150SIACOM JSC

AS202032GOLINE SA

AS20811Retelit Digital Services S.p.A.

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS24482SG.GS

AS49544i3D.net B.V

AS49605Digital Telecommunication Services S.r.l.

AS49709Videobyte S.r.l.