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

AS18422

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS18422

NameITRINET-AS-TW

Country

RIRAPNIC

Allocated04.09.2008

Abuse contactjesselin@itri.org.tw

Network Overview

IPv4 Prefixes33

IPv6 Prefixes3

Upstreams (Transit)10

Downstreams (Customers)0

BGP Peers2

AS Path (BGP neighbours)

Upstreams (Transit)

AS10133Chief Telecom Inc.AS137409GSL Networks Pty LTD AS17408AboveNet Communications Taiwan AS18041Taiwan Digital Streaming Co.AS4780Digital United Inc.AS6939Hurricane Electric LLC+4

AS18422ITRINET-AS-TW

Downstreams (Customers)

none

Upstreams (Transit) (10)

AS10133Chief Telecom Inc.

AS137409GSL Networks Pty LTD

AS17408AboveNet Communications Taiwan

AS18041Taiwan Digital Streaming Co.

AS4780Digital United Inc.

AS6939Hurricane Electric LLC

AS7539National Center for High-performance Computing

AS7713PT Telkom Indonesia Tbk

AS9264Academia Sinica

AS9924Taiwan Fixed Network, Telco and Network Service Provider.

IPv4 Prefixes (33)

140.96.170.0/24

61.61.242.0/24

140.96.224.0/19

140.96.170.0/23

61.61.248.0/21

140.96.0.0/17

140.96.128.0/19

140.96.174.0/23

140.96.96.0/19

140.96.160.0/19

61.61.248.0/22

61.61.244.0/24

140.96.176.0/22

140.96.192.0/19

61.61.240.0/21

140.96.192.0/18

140.96.180.0/22

140.96.0.0/16

140.96.64.0/18

140.96.32.0/19

140.96.172.0/22

140.96.172.0/23

61.61.252.0/22

140.96.176.0/21

140.96.171.0/24

140.96.64.0/19

140.96.0.0/18

140.96.128.0/18

61.61.240.0/22

140.96.0.0/19

61.61.244.0/22

61.61.240.0/20

140.96.128.0/17

IPv6 Prefixes (3)

2001:ed8:8000::/33

2001:ed8::/32

2001:ed8::/33

BGP Peers (2)

AS134823Sky Digital Co., Ltd.

AS24482SG.GS

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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.