ASN Lookup – Networks, Upstreams and Prefixes

AS31

ASN

ARIN

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS31

NameCIT

OrganisationCalifornia Institute of Technology

Country –

RIRARIN

Allocated21.09.1984

Network Overview

IPv4 Prefixes12

IPv6 Prefixes1

Upstreams IPv43

BGP Peers IPv40

Upstreams (Transit Providers)

IPv4

AS13335 CLOUDFLARENET

AS2152 CENIC-2152

AS2153 CENIC-2153

IPv4 Prefixes (12 total)

192.41.208.0/24

131.215.230.0/24

131.215.234.0/24

134.4.0.0/16

131.215.240.0/24

131.215.242.0/23

131.215.239.0/24

192.12.19.0/24

131.215.244.0/23

131.215.229.0/24

131.215.0.0/16

192.31.43.0/24

IPv6 Prefixes (1 total)

2607:f520::/32

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.