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

AS23818

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS23818

NameJETINTERNET

Country

RIRAPNIC

Network Overview

IPv4 Prefixes6

IPv6 Prefixes0

Upstreams (Transit)5

Downstreams (Customers)1

BGP Peers4

AS Path (BGP neighbours)

Upstreams (Transit)

AS17676SoftBank Corp.AS6939Hurricane Electric LLC AS7529GMO NetIRD, Inc.AS9002RETN Limited AS9304HGC Global Communications Limited

AS23818JETINTERNET

Downstreams (Customers)

AS58645Miyagi Cable TV Co.,Ltd

Upstreams (Transit) (5)

AS17676SoftBank Corp.

AS6939Hurricane Electric LLC

AS7529GMO NetIRD, Inc.

AS9002RETN Limited

AS9304HGC Global Communications Limited

Downstreams (Customers) (1)

AS58645Miyagi Cable TV Co.,Ltd

IPv4 Prefixes (6)

203.79.60.0/24

113.212.104.0/24

113.212.107.0/24

203.79.48.0/22

203.79.63.0/24

113.212.106.0/24

BGP Peers (4)

AS18106Viewqwest Pte Ltd

AS24482SG.GS

AS2500WIDE Project

AS49544i3D.net B.V

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.