ASN Lookup – Networks, Upstreams and Prefixes

AS513

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS513

NameCERN

OrganisationCERN-MNT

Country –

RIRRIPE NCC

Allocated22.10.2001

Abuse contactabuse@cern.ch

Network Overview

IPv4 Prefixes20

IPv6 Prefixes2

Upstreams IPv410

BGP Peers IPv450

Upstreams (Transit Providers)

IPv4

AS1103 SURFNET-NL

AS13030 INIT7

AS15576 NTS

AS174 COGENT-174

AS20965 GEANT

AS21320 GEANT_IAS_VRF

AS25091 IP-Max

AS29222 Infomaniak-AS

AS293 ESNET

AS30781 JAGUAR-AS

IPv4 Prefixes (20 total)

192.91.236.0/22

192.16.156.0/22

192.16.164.0/23

188.184.0.0/16

192.65.183.0/24

128.141.0.0/16

192.91.244.0/23

128.142.0.0/16

192.91.246.0/24

192.16.166.0/24

192.65.192.0/22

137.138.0.0/16

192.16.155.0/24

188.185.0.0/16

192.16.160.0/22

192.65.196.0/23

192.91.240.0/22

192.65.184.0/21

194.12.128.0/18

185.249.56.0/22

IPv6 Prefixes (2 total)

2001:1458::/32

2001:1459::/32

BGP Peers IPv4 (50 total, showing 20)

AS12654

AS20940

AS21449

AS25152

AS28810

AS48751

AS12350

AS15547

AS2027

AS20932

AS10764

AS11537

AS12333

AS12350

AS13335

AS15169

AS15547

AS15796

AS15830

AS17579

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.