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

AS15401

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS15401

NameEOLAS-AS

OrganisationBDI-EOLAS-MNT

Country –

RIRRIPE NCC

Allocated01.01.1970

Abuse contactabuse@eolas.fr

Network Overview

IPv4 Prefixes24

IPv6 Prefixes1

Upstreams (Transit)32

Downstreams (Customers)2

BGP Peers27

AS Path (BGP neighbours)

Upstreams (Transit)

AS12779IT.Gate S.p.A.AS137409GSL Networks Pty LTD AS174Cogent Communications, LLC AS20562Open Peering (Broadband Hosting B.V.)AS20764CJSC RASCOM AS209090Association Stolon+26

AS15401EOLAS-AS

Downstreams (Customers)

AS42970Mezcalito SCOP-SARL AS60595Neptune Internet Services SAS

Upstreams (Transit) (32)

AS12779IT.Gate S.p.A.

AS137409GSL Networks Pty LTD

AS174Cogent Communications, LLC

AS20562Open Peering (Broadband Hosting B.V.)

AS20764CJSC RASCOM

AS209090Association Stolon

AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd

AS215596KISSGROUP SAS

AS25091IP-Max SA

AS31561Nine-IX Route Servers

AS3215Orange S.A.

AS3356Lumen (Level 3)

Downstreams (Customers) (2)

AS42970Mezcalito SCOP-SARL

AS60595Neptune Internet Services SAS

IPv4 Prefixes (24)

178.237.105.0/24

178.237.99.0/24

178.237.108.0/24

178.237.111.0/24

31.193.48.0/22

31.193.53.0/24

2.56.158.0/24

178.237.110.0/24

185.3.65.0/24

178.237.96.0/20

31.193.54.0/23

178.237.100.0/24

178.237.106.0/24

178.237.101.0/24

178.237.109.0/24

2.56.156.0/23

178.237.96.0/24

178.237.102.0/24

185.3.64.0/22

31.193.48.0/21

185.23.92.0/22

178.237.104.0/24

178.237.103.0/24

178.237.98.0/24

IPv6 Prefixes (1)

2a00:4280::/32

BGP Peers (27)

AS13237euNetworks GmbH

AS15547netplus.ch SA

AS16347ADISTA SAS

AS1828PacketFabric / Unitas Global

AS198385AlpineDC SA

AS2027MilkyWan

AS204092Association GRIFON

AS209823Enki Multimedia EURL

AS212635Jurrian van Iersel

AS24482SG.GS

AS25160Vorboss Limited

AS29075IELO-LIAZO SERVICES SAS

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.