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

AS51248

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS51248

NameHOST-TELECOM

OrganisationALSAUT-MNT

Country –

RIRRIPE NCC

Allocated30.06.2010

Abuse contactabuse@host-telecom.cz

Network Overview

IPv4 Prefixes16

IPv6 Prefixes5

Upstreams (Transit)22

Downstreams (Customers)6

BGP Peers16

AS Path (BGP neighbours)

Upstreams (Transit)

AS1299Arelion (fka. Telia Carrier)AS13194UAB "Bite Lietuva"AS137409GSL Networks Pty LTD AS14840BR.DIGITAL AS174Cogent Communications, LLC AS1764Next Layer Telecommunications+16

AS51248HOST-TELECOM

Downstreams (Customers)

AS1299Arelion (fka. Telia Carrier)AS174Cogent Communications, LLC AS199669Okay-Telecom Ltd.AS202984Team-Host (Chernyshov Aleksandr Aleksandrovich)AS215305Mastersoft S.R.L.AS62212SmartApe OU

Upstreams (Transit) (22)

AS1299Arelion (fka. Telia Carrier)

AS13194UAB "Bite Lietuva"

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS174Cogent Communications, LLC

AS1764Next Layer Telecommunications

AS202984Team-Host (Chernyshov Aleksandr Aleksandrovich)

AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd

AS25091IP-Max SA

AS286GTT Communications Inc.

AS3223Voxility LLP

AS3257GTT Communications Inc.

Downstreams (Customers) (6)

AS1299Arelion (fka. Telia Carrier)

AS174Cogent Communications, LLC

AS199669Okay-Telecom Ltd.

AS202984Team-Host (Chernyshov Aleksandr Aleksandrovich)

AS215305Mastersoft S.R.L.

AS62212SmartApe OU

IPv4 Prefixes (16)

85.137.25.0/24

158.255.32.0/21

193.161.84.0/22

91.209.77.0/24

188.124.56.0/21

135.106.134.0/23

194.87.126.0/24

45.10.191.0/24

212.192.210.0/24

158.255.39.0/24

194.87.52.0/24

5.43.224.0/21

45.129.142.0/24

185.8.56.0/22

176.74.216.0/21

195.133.35.0/24

IPv6 Prefixes (5)

2a03:1840:2::/48

2a03:1840:3::/48

2a10:9687::/32

2a03:1840::/48

2a03:1840:1::/48

BGP Peers (16)

AS198150SIACOM JSC

AS199524Gcore S.A.

AS205112PHILUNET GmbH

AS209823Enki Multimedia EURL

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS24482SG.GS

AS28910"Uzbektelekom" Joint Stock Company

AS29504Freenet Liberec, z.s.

AS36236NetActuate, Inc

AS37721Virtual Technologies & Solutions

AS40994Alwyzon (Hohl IT)

AS41722Miran Ltd.

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.