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

AS44513

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS44513

NameOPTIMA

OrganisationMNT-OPTIMAITALIA

Country –

RIRRIPE NCC

Allocated30.01.2008

Abuse contactabuse@optimaitalia.com

Network Overview

IPv4 Prefixes12

IPv6 Prefixes0

Upstreams (Transit)20

Downstreams (Customers)0

BGP Peers22

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS14840BR.DIGITAL AS174Cogent Communications, LLC AS216265ARISTO NETWORKS LTD AS22356Durand do Brasil Ltda AS24961WIIT AG (fka. myLoc Managed IT AG)+14

AS44513OPTIMA

Downstreams (Customers)

none

Upstreams (Transit) (20)

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS174Cogent Communications, LLC

AS216265ARISTO NETWORKS LTD

AS22356Durand do Brasil Ltda

AS24961WIIT AG (fka. myLoc Managed IT AG)

AS264409Huge Networks

AS28716Retelit Digital Services S.p.A.

AS31034Aruba S.p.A.

AS31543myNet GmbH

AS3356Lumen (Level 3)

AS4455IX Reach Ltd

IPv4 Prefixes (12)

213.163.216.0/21

195.181.176.0/21

31.15.76.0/22

80.69.240.0/20

213.163.208.0/21

31.15.72.0/22

185.129.88.0/22

213.32.208.0/20

92.43.240.0/21

195.181.184.0/22

195.181.188.0/22

31.15.76.0/24

BGP Peers (22)

AS12637Seeweb s.r.l.

AS12779IT.Gate S.p.A.

AS13237euNetworks GmbH

AS15605Connesi S.p.A.

AS198150SIACOM JSC

AS202032GOLINE SA

AS20811Retelit Digital Services S.p.A.

AS20912Panservice s.a.s. di Cuseo Fabrizio & C.

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS24482SG.GS

AS41327Fiber Telecom S.p.A.

AS49544i3D.net B.V

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.