ASN Lookup – Networks, Upstreams and Prefixes

AS1103

ASN

RIPE NCC

RIR

100

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS1103

NameSURFNET-NL

OrganisationAS1103-MNT

Country –

RIRRIPE NCC

Allocated23.09.2002

Abuse contactcert@surfcert.nl

Network Overview

IPv4 Prefixes100

IPv6 Prefixes3

Upstreams IPv410

BGP Peers IPv41505

Upstreams (Transit Providers)

IPv4

AS1031 AS1031

AS1101 IP-EEND-AS

AS11537 AS11537

AS1267 ASN-WINDTRE

AS12779 ITGATE

AS13030 INIT7

AS13194 BITE

AS137409 GSLNETWORKS-AS-AP

AS15412 FLAG-AS

AS15576 NTS

IPv4 Prefixes (100 total, showing 20)

145.144.0.0/12

145.74.0.0/15

145.136.0.0/15

145.76.0.0/16

145.103.0.0/16

194.53.89.0/24

145.38.0.0/15

192.16.188.0/23

129.125.0.0/16

192.42.113.0/24

145.0.0.0/16

145.97.24.0/21

145.97.20.0/22

145.97.16.0/22

145.20.0.0/16

145.124.0.0/15

145.138.0.0/16

130.37.0.0/16

145.118.0.0/16

194.13.16.0/20

IPv6 Prefixes (3 total)

2001:67c:262c::/48

2001:67c:1200::/48

2001:610::/29

BGP Peers IPv4 (1505 total, showing 20)

AS10099

AS10122

AS1031

AS1101

AS11019

AS1102

AS1104

AS112

AS1124

AS1128

AS1133

AS1140

AS1145

AS1147

AS1152

AS11537

AS1161

AS11967

AS1199

AS1200

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.