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

AS51944

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS51944

NamePROMEDIA-IPV-AS

OrganisationDARIUSZ WESOLOWSKI trading as PROMEDIA NOWICKI WESOLOWSKI Sp.J.

Country –

RIRRIPE NCC

Allocated03.12.2010

Abuse contactabuse@ipv.net.pl

Network Overview

IPv4 Prefixes12

IPv6 Prefixes2

Upstreams (Transit)19

Downstreams (Customers)0

BGP Peers13

AS Path (BGP neighbours)

Upstreams (Transit)

AS14840BR.DIGITAL AS1764Next Layer Telecommunications AS201054Stowarzyszenie e-Poludnie AS20562Open Peering (Broadband Hosting B.V.)AS212261Stowarzyszenie e-Poludnie AS22356Durand do Brasil Ltda+13

AS51944PROMEDIA-IPV-AS

Downstreams (Customers)

none

Upstreams (Transit) (19)

AS14840BR.DIGITAL

AS1764Next Layer Telecommunications

AS201054Stowarzyszenie e-Poludnie

AS20562Open Peering (Broadband Hosting B.V.)

AS212261Stowarzyszenie e-Poludnie

AS22356Durand do Brasil Ltda

AS24482SG.GS

AS263444Open X Tecnologia Ltda

AS264409Huge Networks

AS286GTT Communications Inc.

AS3257GTT Communications Inc.

AS33891Core-Backbone GmbH

IPv4 Prefixes (12)

185.235.34.0/24

193.151.51.0/24

193.151.50.0/24

193.218.7.0/24

193.203.22.0/24

91.227.103.0/24

193.151.49.0/24

193.151.48.0/24

185.123.48.0/22

45.150.151.0/24

193.203.224.0/24

91.227.104.0/22

IPv6 Prefixes (2)

2001:67c:21e8::/48

2a06:aa40::/29

BGP Peers (13)

AS198150SIACOM JSC

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS28917Fiord Networks, UAB

AS29504Freenet Liberec, z.s.

AS3212Telemach Slovenija d.o.o.

AS35369LINZ STROM GAS WAERME GmbH fuer Energiedienstleistungen und Telekommunikation

AS36236NetActuate, Inc

AS37721Virtual Technologies & Solutions

AS47692Nessus GmbH

AS49544i3D.net B.V

AS51184Fonira Telekom GmbH

AS59890Kabel-TV Lampert GmbH & Co KG

AS8529

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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.