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

AS8265

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS8265

NameFASTNET-BKB-ASN

OrganisationFASTNET-MNT

Country –

RIRRIPE NCC

Allocated01.01.1970

Abuse contactabuse@fastnet.it

Network Overview

IPv4 Prefixes6

IPv6 Prefixes3

Upstreams (Transit)22

Downstreams (Customers)1

BGP Peers23

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS14840BR.DIGITAL AS15830Equinix, Inc.AS196959NAMEX CONSORZIO AS216265ARISTO NETWORKS LTD AS216309InvisionTech Group S.r.l.+16

AS8265FASTNET-BKB-ASN

Downstreams (Customers)

AS20144ICANN - L-root

Upstreams (Transit) (22)

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS15830Equinix, Inc.

AS196959NAMEX CONSORZIO

AS216265ARISTO NETWORKS LTD

AS216309InvisionTech Group S.r.l.

AS22356Durand do Brasil Ltda

AS24961WIIT AG (fka. myLoc Managed IT AG)

AS263444Open X Tecnologia Ltda

AS264409Huge Networks

AS28716Retelit Digital Services S.p.A.

AS31543myNet GmbH

Downstreams (Customers) (1)

AS20144ICANN - L-root

IPv4 Prefixes (6)

195.96.192.0/20

185.28.52.0/22

195.96.208.0/20

185.28.52.0/23

185.28.54.0/23

195.96.192.0/19

IPv6 Prefixes (3)

2a02:2888::/33

2a02:2888:8000::/33

2a02:2888::/32

BGP Peers (23)

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.

AS20912Panservice s.a.s. di Cuseo Fabrizio & C.

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS24482SG.GS

AS41327Fiber Telecom S.p.A.

AS49544i3D.net B.V

AS20144ICANN - L-root

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.