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

AS9371

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS9371

NameSAKURA-C

Country

RIRAPNIC

Network Overview

IPv4 Prefixes22

IPv6 Prefixes1

Upstreams (Transit)7

Downstreams (Customers)25

BGP Peers2

AS Path (BGP neighbours)

Upstreams (Transit)

AS2497Internet Initiative Japan Inc.AS2516KDDI Corporation AS2518BIGLOBE Inc.AS2914NTT America, Inc.AS6939Hurricane Electric LLC AS8220COLT+1

AS9371SAKURA-C

Downstreams (Customers)

AS131928Tottori Teletopia Co., Ltd.AS131969Suzuyo Shinwart Corporation AS131976INTERNET MULTIFEED CO.AS131988Takehara Cable Network Co,Ltd AS151377Solare Hotels and Resorts Co., Ltd.AS17940CYBER LINKS Co.,Ltd.+19

Upstreams (Transit) (7)

AS2497Internet Initiative Japan Inc.

AS2516KDDI Corporation

AS2518BIGLOBE Inc.

AS2914NTT America, Inc.

AS6939Hurricane Electric LLC

AS8220COLT

AS9370SAKURA Internet Inc.

Downstreams (Customers) (25)

AS131928Tottori Teletopia Co., Ltd.

AS131969Suzuyo Shinwart Corporation

AS131976INTERNET MULTIFEED CO.

AS131988Takehara Cable Network Co,Ltd

AS151377Solare Hotels and Resorts Co., Ltd.

AS17940CYBER LINKS Co.,Ltd.

AS18077Yamaguchi Cable Vision Co.,Ltd

AS203724Musarubra Germany GmbH

AS23614Kochi Systems Co., Ltd.

AS24282KAGOYA JAPAN Inc.

AS24429Alibaba Cloud

AS30103Zoom Video Communications, Inc

AS59105Home NOC Operators Group

IPv4 Prefixes (22)

183.181.76.0/23

160.27.0.0/16

110.74.32.0/20

210.135.112.0/20

202.255.237.0/24

110.74.64.0/20

49.212.0.0/16

219.94.128.0/17

183.181.100.0/23

103.197.5.0/24

112.78.192.0/19

58.84.5.0/24

183.181.74.0/23

210.224.160.0/19

103.15.0.0/22

219.109.160.0/19

112.78.112.0/20

182.163.0.0/19

210.188.192.0/19

182.48.0.0/18

133.167.0.0/16

133.167.21.0/24

IPv6 Prefixes (1)

2403:3a00::/32

BGP Peers (2)

AS35280F5 Networks SARL

AS59105Home NOC Operators Group

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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.