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

AS30900

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS30900

NameWEBWORLD-AS

OrganisationSternforth Ltd. trading as WebWorld

Country –

RIRRIPE NCC

Allocated08.01.2004

Abuse contactlir@webworld.ie

Network Overview

IPv4 Prefixes34

IPv6 Prefixes2

Upstreams (Transit)8

Downstreams (Customers)1

BGP Peers5

AS Path (BGP neighbours)

Upstreams (Transit)

AS20326TeraSwitch Networks Inc.AS20562Open Peering (Broadband Hosting B.V.)AS3303Swisscom (Schweiz) AG AS56911Warian S.R.L.AS6204INTERKVM HOST SRL AS6830Liberty Global Europe Holding B.V.+2

AS30900WEBWORLD-AS

Downstreams (Customers)

AS212895Johannes Ernst

Upstreams (Transit) (8)

AS20326TeraSwitch Networks Inc.

AS20562Open Peering (Broadband Hosting B.V.)

AS3303Swisscom (Schweiz) AG

AS56911Warian S.R.L.

AS6204INTERKVM HOST SRL

AS6830Liberty Global Europe Holding B.V.

AS6939Hurricane Electric LLC

AS9002RETN Limited

Downstreams (Customers) (1)

AS212895Johannes Ernst

IPv4 Prefixes (34)

82.25.215.0/24

82.24.237.0/24

185.108.128.0/22

82.22.248.0/24

82.25.248.0/24

82.23.202.0/24

82.29.248.0/24

185.152.4.0/22

82.29.214.0/24

82.27.249.0/24

82.25.235.0/24

82.24.221.0/24

83.138.8.0/21

82.21.218.0/24

82.26.248.0/24

83.138.15.0/24

77.47.213.0/24

82.26.249.0/24

82.24.248.0/24

82.22.214.0/24

82.21.248.0/24

82.25.213.0/24

82.23.225.0/24

82.29.247.0/24

217.115.112.0/20

185.176.128.0/22

82.23.238.0/24

82.22.223.0/24

82.29.235.0/24

195.178.151.0/24

194.9.174.0/24

194.8.59.0/24

188.220.23.0/24

194.8.48.0/24

IPv6 Prefixes (2)

2a01:6280::/32

2a11:840:27::/48

BGP Peers (5)

AS12969Ljósleiðarinn ehf (Sýn)

AS13237euNetworks GmbH

AS31122Digiweb ltd

AS36236NetActuate, Inc

AS39122Blacknight Internet Solutions Limited

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.