AS7522 STNet, Incorporated

STCN - STNet, Incorporated · registered in Japan

IPv4 addresses594,94451 prefixes · 0.019% of announced IPv4

Rank in Japan#25largest network in JP by IPv4 space, of 724 · 0.37% of JP

Rank worldwide#512of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS7522 in ASN lookup Look up an IP in this network (27.120.144.1) All networks in Japan

IPv4 prefixes

All 51 prefixes, in address order.

27.120.144.0/20
27.120.160.0/20
27.133.48.0/20
27.134.128.0/19
27.134.160.0/20
36.52.96.0/20
36.53.240.0/20
59.156.144.0/20
61.206.0.0/20
61.215.240.0/20
101.1.128.0/17
103.3.12.0/22
110.2.192.0/19
115.30.128.0/17
115.31.0.0/18
119.150.0.0/19
119.150.240.0/20
122.129.160.0/19
122.145.48.0/20
122.145.64.0/19
122.145.96.0/20
122.248.64.0/19
123.230.0.0/16
123.254.0.0/18
125.215.64.0/18
133.123.0.0/16
150.52.0.0/16
175.103.224.0/19
183.176.0.0/16
202.11.160.0/22
202.67.16.0/20
202.70.208.0/20
202.84.80.0/20
202.240.176.0/23
202.243.187.0/24
202.246.114.0/24
202.255.16.0/21
203.112.32.0/19
203.139.192.0/19
210.142.224.0/19
210.157.224.0/19
210.159.176.0/20
211.7.224.0/19
211.132.64.0/19
218.40.112.0/20
218.231.48.0/20
219.106.160.0/20
219.109.96.0/19
219.124.160.0/19
220.150.48.0/20
220.208.0.0/19

IPv6 prefixes

All 1 prefix.

2001:318::/32

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AS7671#26 MCNET - NTT SmartConnect Corporation453,888

AS18081#27 KCN - Kintetsu Cable Network Co., Ltd.442,368

AS138384#28 RMNI-AS-AP - Rakuten Mobile Network, Inc.420,864

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