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

AS47242

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS47242

NameHOST-SPA

Organisationcoltengine-mnt

Country –

RIRRIPE NCC

Allocated22.05.2008

Abuse contactripe@host.it

Network Overview

IPv4 Prefixes38

IPv6 Prefixes0

Upstreams (Transit)18

Downstreams (Customers)4

BGP Peers22

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS14840BR.DIGITAL AS174Cogent Communications, LLC AS20766Association "Gitoyen"AS21056Vianova S.p.A AS24961WIIT AG (fka. myLoc Managed IT AG)+12

AS47242HOST-SPA

Downstreams (Customers)

AS199125Alliance Reseaux SAS AS207799BOTANY SRL AS42425PSA S.r.l.AS43625Wi-Fi System di GianCarlo Forno

Upstreams (Transit) (18)

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS174Cogent Communications, LLC

AS20766Association "Gitoyen"

AS21056Vianova S.p.A

AS24961WIIT AG (fka. myLoc Managed IT AG)

AS264409Huge Networks

AS31543myNet GmbH

AS3303Swisscom (Schweiz) AG

AS34019Hivane Association

AS42425PSA S.r.l.

AS50673Serverius Holding B.V.

Downstreams (Customers) (4)

AS199125Alliance Reseaux SAS

AS207799BOTANY SRL

AS42425PSA S.r.l.

AS43625Wi-Fi System di GianCarlo Forno

IPv4 Prefixes (38)

185.201.64.0/24

83.220.29.0/24

81.31.150.0/24

81.31.147.0/24

149.62.185.0/24

185.73.138.0/24

185.201.65.0/24

185.73.136.0/24

81.31.159.0/24

185.84.99.0/24

82.119.36.0/24

185.73.139.0/24

185.84.97.0/24

81.31.157.0/24

81.31.145.0/24

149.62.186.0/24

185.84.96.0/24

81.31.156.0/24

81.31.148.0/24

81.31.152.0/24

81.31.151.0/24

81.31.146.0/24

185.201.66.0/24

149.62.184.0/24

149.62.188.0/24

149.62.189.0/24

81.31.144.0/24

81.31.154.0/24

81.31.149.0/24

149.62.191.0/24

149.62.187.0/24

81.31.153.0/24

185.84.98.0/24

81.31.158.0/24

83.220.28.0/24

81.31.155.0/24

185.59.155.0/24

149.62.190.0/24

BGP Peers (22)

AS12637Seeweb s.r.l.

AS13237euNetworks GmbH

AS15605Connesi S.p.A.

AS198150SIACOM JSC

AS202032GOLINE SA

AS2027MilkyWan

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS24482SG.GS

AS49544i3D.net B.V

AS49605Digital Telecommunication Services S.r.l.

AS49709Videobyte S.r.l.

AS50877Airbeam S.r.l.

AS199125Alliance Reseaux SAS

AS207799BOTANY SRL

AS43625Wi-Fi System di GianCarlo Forno

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.