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

AS15703

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS15703

NameTrueServer-AS

OrganisationTrueFullstaq B.V.

Country –

RIRRIPE NCC

Allocated23.07.2002

Abuse contactabuse@true.nl

Network Overview

IPv4 Prefixes16

IPv6 Prefixes2

Upstreams (Transit)41

Downstreams (Customers)0

BGP Peers56

AS Path (BGP neighbours)

Upstreams (Transit)

AS12779IT.Gate S.p.A.AS13030Init7 (Switzerland) Ltd.AS15576NTS workspace AG AS15958CETIN Ltd. Belgrade AS1764Next Layer Telecommunications AS200020Stichting NBIP-NaWas+35

AS15703TrueServer-AS

Downstreams (Customers)

none

Upstreams (Transit) (41)

AS12779IT.Gate S.p.A.

AS13030Init7 (Switzerland) Ltd.

AS15576NTS workspace AG

AS15958CETIN Ltd. Belgrade

AS1764Next Layer Telecommunications

AS200020Stichting NBIP-NaWas

AS20485TransTeleCom JSC

AS205103Telegraph42 Management GmbH

AS20562Open Peering (Broadband Hosting B.V.)

AS209022Tschajera Limited

AS22356Durand do Brasil Ltda

AS24785Joint Transit (Broadband Hosting B.V.)

IPv4 Prefixes (16)

213.193.210.0/24

194.50.112.0/24

213.193.247.0/24

213.193.234.0/24

87.233.128.0/18

87.233.145.0/24

80.247.220.0/24

87.233.0.0/18

193.28.152.0/24

213.239.136.0/24

87.233.0.0/16

87.233.64.0/18

87.233.248.0/24

87.233.192.0/18

87.233.143.0/24

87.233.92.0/24

IPv6 Prefixes (2)

2001:9a8::/32

2a0b:b600:3000::/48

BGP Peers (56)

AS1103SURF B.V.

AS1140Stichting Internet Domeinregistratie Nederland

AS12637Seeweb s.r.l.

AS12859BIT BV

AS12969Ljósleiðarinn ehf (Sýn)

AS13237euNetworks GmbH

AS14630Invesco Group Services, Inc.

AS14907Wikimedia Foundation Inc.

AS15547netplus.ch SA

AS15605Connesi S.p.A.

AS16347ADISTA SAS

AS18106Viewqwest Pte Ltd

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.