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

AS39729

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS39729

NameREGISTER-AS

OrganisationMNT-REGISTER

Country –

RIRRIPE NCC

Allocated18.04.2006

Abuse contactabuse@register.it

Network Overview

IPv4 Prefixes21

IPv6 Prefixes1

Upstreams (Transit)18

Downstreams (Customers)0

BGP Peers18

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS14840BR.DIGITAL AS22356Durand do Brasil Ltda AS24961WIIT AG (fka. myLoc Managed IT AG)AS263444Open X Tecnologia Ltda AS264409Huge Networks+12

AS39729REGISTER-AS

Downstreams (Customers)

none

Upstreams (Transit) (18)

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS22356Durand do Brasil Ltda

AS24961WIIT AG (fka. myLoc Managed IT AG)

AS263444Open X Tecnologia Ltda

AS264409Huge Networks

AS286GTT Communications Inc.

AS28716Retelit Digital Services S.p.A.

AS29632Netassist International EOOD

AS31543myNet GmbH

AS3257GTT Communications Inc.

AS35280F5 Networks SARL

IPv4 Prefixes (21)

81.88.61.0/24

81.88.60.0/24

195.110.112.0/24

195.110.102.0/23

81.88.58.0/24

195.110.124.0/22

195.110.104.0/23

185.110.66.0/23

185.2.4.0/22

195.110.120.0/23

195.110.122.0/23

81.88.48.0/20

81.88.53.0/24

195.110.118.0/23

185.110.66.0/24

81.88.63.0/24

185.2.6.0/24

213.158.80.0/22

195.110.100.0/23

81.88.52.0/24

195.110.107.0/24

IPv6 Prefixes (1)

2a01:8100:2000::/36

BGP Peers (18)

AS12637Seeweb s.r.l.

AS12779IT.Gate S.p.A.

AS13237euNetworks GmbH

AS15605Connesi S.p.A.

AS198150SIACOM JSC

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS24482SG.GS

AS41327Fiber Telecom S.p.A.

AS49544i3D.net B.V

AS49605Digital Telecommunication Services S.r.l.

AS49709Videobyte S.r.l.

AS50877Airbeam S.r.l.

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.