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

AS131948

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS131948

NameFORNEXT

Country

RIRAPNIC

Network Overview

IPv4 Prefixes1

IPv6 Prefixes1

Upstreams (Transit)9

Downstreams (Customers)5

BGP Peers9

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS20326TeraSwitch Networks Inc.AS24482SG.GS AS35280F5 Networks SARL AS6939Hurricane Electric LLC AS9002RETN Limited+3

AS131948FORNEXT

Downstreams (Customers)

AS10004Phoenix Communications Inc.AS131910SORACOM. INC.AS17686ACCELIA AS23661CLARA, Inc.AS59105Home NOC Operators Group

Upstreams (Transit) (9)

AS137409GSL Networks Pty LTD

AS20326TeraSwitch Networks Inc.

AS24482SG.GS

AS35280F5 Networks SARL

AS6939Hurricane Electric LLC

AS9002RETN Limited

AS9304HGC Global Communications Limited

AS9498Bharti Airtel Ltd.

AS9583Sify Limited

Downstreams (Customers) (5)

AS10004Phoenix Communications Inc.

AS131910SORACOM. INC.

AS17686ACCELIA

AS23661CLARA, Inc.

AS59105Home NOC Operators Group

IPv4 Prefixes (1)

103.177.117.0/24

IPv6 Prefixes (1)

2001:df0:2440::/48

BGP Peers (9)

AS14907Wikimedia Foundation Inc.

AS18106Viewqwest Pte Ltd

AS1828PacketFabric / Unitas Global

AS19151BroadbandONE, LLC

AS199524Gcore S.A.

AS2500WIDE Project

AS49544i3D.net B.V

AS59105Home NOC Operators Group

AS8529Zain Omantel International FZ-LLC

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.