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

AS1659

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS1659

NameERX-TANET-ASN1

Country

RIRAPNIC

Allocated04.09.2008

Abuse contactnoc@mail.moe.gov.tw

Network Overview

IPv4 Prefixes37

IPv6 Prefixes1

Upstreams (Transit)5

Downstreams (Customers)0

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS17711National Dong Hwa University AS17717Ministry of Education Computer Center Taipei, Taiwan AS3462HiNet (Chunghwa Telecom)AS7539National Center for High-performance Computing AS9264Academia Sinica

AS1659ERX-TANET-ASN1

Downstreams (Customers)

none

Upstreams (Transit) (5)

AS17711National Dong Hwa University

AS17717Ministry of Education Computer Center Taipei, Taiwan

AS3462HiNet (Chunghwa Telecom)

AS7539National Center for High-performance Computing

AS9264Academia Sinica

IPv4 Prefixes (37)

210.240.0.0/16

163.16.0.0/13

203.64.0.0/16

192.192.0.0/16

210.70.0.0/16

163.14.0.0/15

163.24.0.0/14

140.92.0.0/17

210.60.0.0/16

140.128.0.0/13

140.110.0.0/15

203.72.0.0/16

192.83.196.0/24

210.62.64.0/19

163.30.0.0/15

140.136.0.0/15

203.71.0.0/16

203.68.0.0/16

163.28.0.0/16

140.92.128.0/17

210.62.224.0/20

210.243.0.0/18

134.208.0.0/16

163.32.0.0/16

140.92.0.0/16

140.112.0.0/12

192.83.192.0/22

210.59.0.0/17

140.138.0.0/16

210.62.240.0/21

210.71.0.0/17

210.67.248.0/21

120.96.0.0/11

192.83.166.0/23

163.13.0.0/16

192.83.168.0/21

192.83.176.0/20

IPv6 Prefixes (1)

2001:288::/32

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.