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

AS51790

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS51790

NameSIEL

OrganisationMNT-SIEL

Country –

RIRRIPE NCC

Allocated04.11.2010

Abuse contactabuse@siel.si

Network Overview

IPv4 Prefixes21

IPv6 Prefixes4

Upstreams (Transit)11

Downstreams (Customers)5

BGP Peers2

AS Path (BGP neighbours)

Upstreams (Transit)

AS12778MEGA M, d.o.o.AS14840BR.DIGITAL AS174Cogent Communications, LLC AS263444Open X Tecnologia Ltda AS3212Telemach Slovenija d.o.o.AS3303Swisscom (Schweiz) AG+5

AS51790SIEL

Downstreams (Customers)

AS204177CVS MOBILE, informacijske resitve, d.o.o.AS44615PRO PLUS, d.o.o.AS49618ERA d.o.o.AS52035D1, informacijske tehnologije, d.o.o.AS60114SIEL, d.o.o.

Upstreams (Transit) (11)

AS12778MEGA M, d.o.o.

AS14840BR.DIGITAL

AS174Cogent Communications, LLC

AS263444Open X Tecnologia Ltda

AS3212Telemach Slovenija d.o.o.

AS3303Swisscom (Schweiz) AG

AS3356Lumen (Level 3)

AS36236NetActuate, Inc

AS44306OMONIA d.o.o.

AS5511Orange S.A.

AS6939Hurricane Electric LLC

Downstreams (Customers) (5)

AS204177CVS MOBILE, informacijske resitve, d.o.o.

AS44615PRO PLUS, d.o.o.

AS49618ERA d.o.o.

AS52035D1, informacijske tehnologije, d.o.o.

AS60114SIEL, d.o.o.

IPv4 Prefixes (21)

185.97.54.0/23

46.19.8.0/23

46.19.13.0/24

185.185.88.0/23

185.57.146.0/24

185.185.91.0/24

185.57.145.0/24

209.16.154.0/23

185.97.52.0/23

209.16.152.0/23

91.230.238.0/24

46.19.10.0/23

45.136.190.0/23

46.19.14.0/23

45.136.188.0/23

185.57.144.0/23

185.92.228.0/24

217.61.252.0/24

193.3.59.0/24

195.128.141.0/24

46.19.12.0/23

IPv6 Prefixes (4)

2a02:28b7::/32

2a02:28b1::/32

2a02:28b2::/32

2a02:28b0::/32

BGP Peers (2)

AS198150SIACOM JSC

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS 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.