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

AS9370

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS9370

NameSAKURA-B

Country

RIRAPNIC

Network Overview

IPv4 Prefixes39

IPv6 Prefixes5

Upstreams (Transit)10

Downstreams (Customers)72

BGP Peers19

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS20485TransTeleCom JSC AS2497Internet Initiative Japan Inc.AS2516KDDI Corporation AS2518BIGLOBE Inc.AS2914NTT America, Inc.+4

AS9370SAKURA-B

Downstreams (Customers)

AS10003Ogaki Cable Television Co.,Inc.AS10013FreeBit Co.,Ltd.AS10099China Unicom Global AS12389Rostelecom PJSC AS131079INTERNET MULTIFEED CO.AS131916Tokyo Bay Network Co.,Ltd.+66

Upstreams (Transit) (10)

AS137409GSL Networks Pty LTD

AS20485TransTeleCom JSC

AS2497Internet Initiative Japan Inc.

AS2516KDDI Corporation

AS2518BIGLOBE Inc.

AS2914NTT America, Inc.

AS6939Hurricane Electric LLC

AS7473Singapore Telecommunications Ltd

AS8220COLT

AS9304HGC Global Communications Limited

Downstreams (Customers) (72)

AS10003Ogaki Cable Television Co.,Inc.

AS10013FreeBit Co.,Ltd.

AS10099China Unicom Global

AS12389Rostelecom PJSC

AS131079INTERNET MULTIFEED CO.

AS131916Tokyo Bay Network Co.,Ltd.

AS131918SHONAN CABLE NETWORK

AS132829Nevigate Communications (S) Pte Ltd

AS133182Running River Network Technology Limited

AS137535JT TELECOM INTERNATIONAL PTE.LTD.

AS137969HONG KONG BRIDGE INFO-TECH LIMITED

AS139468DC Communications Inc.

AS2497Internet Initiative Japan Inc.

AS2514

AS2516KDDI Corporation

AS2519

AS2914NTT America, Inc.

AS45489Sri Lanka Telecom PLC

AS7473Singapore Telecommunications Ltd

AS8220COLT

IPv4 Prefixes (39)

110.44.128.0/20

59.106.240.0/22

27.133.252.0/22

103.108.64.0/23

153.125.224.0/20

59.106.192.0/19

160.16.128.0/17

160.16.0.0/17

103.72.104.0/23

36.53.128.0/18

59.106.224.0/20

153.121.32.0/19

210.229.64.0/21

36.53.0.0/17

59.106.128.0/18

153.121.0.0/19

110.232.160.0/21

153.121.64.0/19

210.188.224.0/19

103.26.32.0/24

110.232.168.0/21

103.57.4.0/22

113.20.160.0/19

103.81.176.0/22

59.106.0.0/17

133.167.0.0/24

103.36.252.0/23

122.202.96.0/19

202.222.16.0/20

27.133.128.0/19

61.211.224.0/20

112.109.0.0/20

27.134.240.0/20

61.211.236.0/24

183.181.102.0/24

27.133.247.0/24

202.181.96.0/20

163.43.0.0/16

103.143.122.0/23

IPv6 Prefixes (5)

2406:ce00::/29

2001:e40::/30

2001:e47::/32

2001:e46::/32

2001:e44::/31

BGP Peers (19)

AS17639Converge ICT Solutions Inc.

AS18106Viewqwest Pte Ltd

AS1828PacketFabric / Unitas Global

AS24482SG.GS

AS2500WIDE Project

AS25152RIPE NCC - K-root

AS35280F5 Networks SARL

AS36236NetActuate, Inc

AS38001NewMedia Express Pte. Ltd.

AS45489Sri Lanka Telecom PLC

AS4777Asia Pacific Network Information Centre

AS49544i3D.net B.V

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.