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

AS8501

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS8501

NamePIONIER-AS

OrganisationAS8256-MNT

Country –

RIRRIPE NCC

Allocated06.09.2002

Abuse contactcert@man.poznan.pl

Network Overview

IPv4 Prefixes7

IPv6 Prefixes1

Upstreams (Transit)9

Downstreams (Customers)25

BGP Peers1

AS Path (BGP neighbours)

Upstreams (Transit)

AS1103SURF B.V.AS174Cogent Communications, LLC AS1853ACONET AS20965GEANT Vereniging AS21320GEANT Vereniging AS2603NORDUnet+3

AS8501PIONIER-AS

Downstreams (Customers)

AS12324Maria Curie-Sklodowska University AS12423Nicolaus Copernicus University in Torun AS15373Politechnika Czestochowska AS15798University of Warmia and Mazury in Olsztyn, Poland AS16263Uniwersytet Radomski im. Kazimierza Pulaskiego AS16283Lodz University of Technology+19

Upstreams (Transit) (9)

AS1103SURF B.V.

AS174Cogent Communications, LLC

AS1853ACONET

AS20965GEANT Vereniging

AS21320GEANT Vereniging

AS2603NORDUnet

AS2607Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET

AS2907Science Information Network

AS3356Lumen (Level 3)

Downstreams (Customers) (25)

AS12324Maria Curie-Sklodowska University

AS12423Nicolaus Copernicus University in Torun

AS15373Politechnika Czestochowska

AS15798University of Warmia and Mazury in Olsztyn, Poland

AS16263Uniwersytet Radomski im. Kazimierza Pulaskiego

AS16283Lodz University of Technology

AS1853ACONET

AS1887NAUKOWA I AKADEMICKA SIEC KOMPUTEROWA - PANSTWOWY INSTYTUT BADAWCZY

AS21182Opole University

AS24848Kielce University of Technology

AS25468Rzeszow University of Technology

AS28678Technical University of Koszalin

IPv4 Prefixes (7)

212.191.240.0/24

212.191.229.0/24

212.191.244.0/24

212.191.225.0/24

212.191.241.0/24

212.191.227.0/24

212.191.224.0/24

IPv6 Prefixes (1)

2001:b10:c000::/35

BGP Peers (1)

AS680Deutsches Forschungsnetz (DFN)

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.