AS9600 So-net Corporation

SONYTELECOM - So-net Corporation · registered in Japan

IPv4 addresses82,94415 prefixes · 0.003% of announced IPv4

Rank in Japan#81largest network in JP by IPv4 space, of 724 · 0.05% of JP

Rank worldwide#2,119of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS9600 in ASN lookup Look up an IP in this network (61.45.192.1) All networks in Japan

IPv4 prefixes

All 15 prefixes, in address order.

61.45.192.0/19
61.195.144.0/20
103.22.152.0/22
115.166.208.0/20
202.94.128.0/19
203.179.80.0/20
210.172.0.0/19
210.175.240.0/20
210.251.240.0/20
211.9.32.0/19
218.42.144.0/20
218.216.64.0/20
219.101.32.0/20
219.106.224.0/19
219.118.160.0/19

IPv6 prefixes

All 1 prefix.

2001:298::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

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AS17514#80 AICS - Otsuka Corp.83,968

AS9466#82 UUNET-JP-AP - UUNET Japan Limited82,944

AS7511#83 SYNAPSE - SYNAPSE Co.,Ltd.78,848

AS9622#84 KCT - Kurashiki Cable TV78,848

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources