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

AS209810

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS209810

NameNETCORESERVICES

Organisationmnt-cz-netcoreservices-1

Country –

RIRRIPE NCC

Allocated28.11.2018

Abuse contactabuse@netcore.services

Network Overview

IPv4 Prefixes6

IPv6 Prefixes1

Upstreams (Transit)18

Downstreams (Customers)10

BGP Peers11

AS Path (BGP neighbours)

Upstreams (Transit)

AS13194UAB "Bite Lietuva"AS14840BR.DIGITAL AS1764Next Layer Telecommunications AS20562Open Peering (Broadband Hosting B.V.)AS207187TKR Jasek, s.r.o.AS22356Durand do Brasil Ltda+12

AS209810NETCORESERVICES

Downstreams (Customers)

AS199490INTERCONNECT s.r.o.AS201116Vybezek.NET s.r.o.AS207187TKR Jasek, s.r.o.AS208805INTERCONNECT s.r.o.AS210061Ladislav Kepl AS210111Netcraft Solutions s.r.o.+4

Upstreams (Transit) (18)

AS13194UAB "Bite Lietuva"

AS14840BR.DIGITAL

AS1764Next Layer Telecommunications

AS20562Open Peering (Broadband Hosting B.V.)

AS207187TKR Jasek, s.r.o.

AS22356Durand do Brasil Ltda

AS24482SG.GS

AS263444Open X Tecnologia Ltda

AS264409Huge Networks

AS28917Fiord Networks, UAB

AS3491PCCW Global (HK) Ltd.

AS39392SH.cz s.r.o.

AS41327

AS43413NEW TELEKOM, spol. s r.o.

Downstreams (Customers) (10)

AS199490INTERCONNECT s.r.o.

AS201116Vybezek.NET s.r.o.

AS207187TKR Jasek, s.r.o.

AS208805INTERCONNECT s.r.o.

AS210061Ladislav Kepl

AS210111Netcraft Solutions s.r.o.

AS31349a-net Liberec s.r.o.

AS39736ICT Support, s.r.o.

AS43413NEW TELEKOM, spol. s r.o.

AS62405Brouzdal, s.r.o.

IPv4 Prefixes (6)

45.129.106.0/24

194.31.188.0/22

89.190.128.0/22

176.118.170.0/23

85.92.96.0/22

194.50.228.0/22

IPv6 Prefixes (1)

2a09:1980::/29

BGP Peers (11)

AS198150SIACOM JSC

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS29504Freenet Liberec, z.s.

AS3212Telemach Slovenija d.o.o.

AS35369LINZ STROM GAS WAERME GmbH fuer Energiedienstleistungen und Telekommunikation

AS37721Virtual Technologies & Solutions

AS47692Nessus GmbH

AS49544i3D.net B.V

AS51184Fonira Telekom GmbH

AS59890Kabel-TV Lampert GmbH & Co KG

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.