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

AS45455

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS45455

NameTH-2S1N-AP

OrganisationTwo S One N Co Ltd

Country

RIRAPNIC

Allocated09.04.2021

Abuse contactthien@2s1n.com

Network Overview

IPv4 Prefixes18

IPv6 Prefixes0

Upstreams (Transit)3

Downstreams (Customers)0

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS45629JasTel Network International Gateway AS45642Jasmine International Tower AS45796UIH / BB Connect

AS45455TH-2S1N-AP

Downstreams (Customers)

none

Upstreams (Transit) (3)

AS45629JasTel Network International Gateway

AS45642Jasmine International Tower

AS45796UIH / BB Connect

IPv4 Prefixes (18)

58.82.187.0/24

203.156.118.0/24

103.51.224.0/24

103.51.225.0/24

45.112.142.0/24

103.51.226.0/23

45.112.140.0/23

45.112.143.0/24

45.112.140.0/24

103.51.224.0/23

45.112.141.0/24

103.51.226.0/24

45.112.140.0/22

58.82.188.0/24

58.82.189.0/24

103.51.227.0/24

45.112.142.0/23

103.51.224.0/22

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.