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

AS57758

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS57758

NameCBWS-AS

OrganisationMNT-CBWS

Country –

RIRRIPE NCC

Allocated14.09.2016

Abuse contactabuse@cbws.nl

Network Overview

IPv4 Prefixes5

IPv6 Prefixes11

Upstreams (Transit)32

Downstreams (Customers)3

BGP Peers40

AS Path (BGP neighbours)

Upstreams (Transit)

AS1031PEER 1031 LLC AS137409GSL Networks Pty LTD AS14840BR.DIGITAL AS174Cogent Communications, LLC AS20485TransTeleCom JSC AS205103Telegraph42 Management GmbH+26

AS57758CBWS-AS

Downstreams (Customers)

AS201801Christian Wittenberg trading as Zerospace Cloud AS211593HNielsen Technologies ApS AS213535YottaSrc

Upstreams (Transit) (32)

AS1031PEER 1031 LLC

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS174Cogent Communications, LLC

AS20485TransTeleCom JSC

AS205103Telegraph42 Management GmbH

AS20562Open Peering (Broadband Hosting B.V.)

AS20764CJSC RASCOM

AS209022Tschajera Limited

AS209090Association Stolon

AS22356Durand do Brasil Ltda

AS24785Joint Transit (Broadband Hosting B.V.)

Downstreams (Customers) (3)

AS201801Christian Wittenberg trading as Zerospace Cloud

AS211593HNielsen Technologies ApS

AS213535YottaSrc

IPv4 Prefixes (5)

185.167.205.0/24

185.142.141.0/24

185.167.204.0/24

185.167.207.0/24

185.167.206.0/24

IPv6 Prefixes (11)

2a0b:b602:2000::/36

2a0b:b602:1000::/36

2a0b:b600:3802::/48

2a0b:b602:4000::/36

2a0b:b602:8000::/36

2a0b:b600:2000::/38

2a0b:b600:3803::/48

2a0b:b600:3c04::/48

2a0b:b600:110::/44

2a0b:b602:3000::/36

2a0b:b600:2400::/38

BGP Peers (40)

AS1103SURF B.V.

AS1140Stichting Internet Domeinregistratie Nederland

AS12859BIT BV

AS14907Wikimedia Foundation Inc.

AS17639Converge ICT Solutions Inc.

AS198150SIACOM JSC

AS199524Gcore S.A.

AS202365Chronos

AS204092Association GRIFON

AS205112PHILUNET GmbH

AS20932Services Industriels de Geneve

AS209823Enki Multimedia EURL

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.