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

AS9270

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS9270

NameAPAN-KR-AS-KR

Country

RIRAPNIC

Abuse contacthostmaster@nic.or.kr

Network Overview

IPv4 Prefixes21

IPv6 Prefixes1

Upstreams (Transit)8

Downstreams (Customers)11

BGP Peers3

AS Path (BGP neighbours)

Upstreams (Transit)

AS1237Korea Research Environment Open NETwork AS23855Singapore Advanced Research and Education Network AS24490Trans-Eurasia Information Network (TEIN2) - SG AS39120Convergenze S.p.A.AS4635HKIX Route Servers AS4766Korea Telecom+2

AS9270APAN-KR-AS-KR

Downstreams (Customers)

AS10052Kyungpook National University AS10063Korea Meteorological Administration AS10197Chonnam National University AS152671SPARCS AS17862Kangwon National University AS17870Kyung Hee University+5

Upstreams (Transit) (8)

AS1237Korea Research Environment Open NETwork

AS23855Singapore Advanced Research and Education Network

AS24490Trans-Eurasia Information Network (TEIN2) - SG

AS39120Convergenze S.p.A.

AS4635HKIX Route Servers

AS4766Korea Telecom

AS7660Asia Pacific Advanced Network - Japan

AS8359MTS PJSC

Downstreams (Customers) (11)

AS10052Kyungpook National University

AS10063Korea Meteorological Administration

AS10197Chonnam National University

AS152671SPARCS

AS17862Kangwon National University

AS17870Kyung Hee University

AS18026JEJU NATIONAL UNIVERSITY

AS55616Daegu Gyeongbuk Institute of Science and Technology

AS7560Jeonbuk National University

AS9317INHA UNIVERSITY

AS9686SungKyunKwan University (SKKU)

IPv4 Prefixes (21)

61.252.56.0/22

116.89.190.0/24

116.89.184.0/21

61.252.57.0/24

116.89.191.0/24

116.89.173.0/24

203.255.252.0/22

203.255.248.0/22

116.89.184.0/22

203.255.248.0/21

210.114.88.0/21

45.248.72.0/22

116.89.174.0/24

61.252.52.0/22

61.252.58.0/24

116.89.189.0/24

103.22.220.0/22

116.89.177.0/24

116.89.172.0/24

116.89.188.0/24

116.89.178.0/24

IPv6 Prefixes (1)

2407:c000::/32

BGP Peers (3)

AS24482SG.GS

AS36236NetActuate, Inc

AS49544i3D.net B.V

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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.