AS17514 Otsuka Corp.

AICS - Otsuka Corp. · registered in Japan

IPv4 addresses83,96823 prefixes · 0.003% of announced IPv4

Rank in Japan#80largest network in JP by IPv4 space, of 724 · 0.05% of JP

Rank worldwide#2,094of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS17514 in ASN lookup Look up an IP in this network (27.0.32.1) All networks in Japan

IPv4 prefixes

All 23 prefixes, in address order.

27.0.32.0/20
103.7.20.0/22
150.91.224.0/20
157.205.0.0/19
157.205.32.0/20
157.205.48.0/20
157.205.64.0/21
157.205.72.0/22
157.205.76.0/22
157.205.80.0/20
157.205.96.0/19
157.205.128.0/18
157.205.192.0/21
157.205.200.0/21
157.205.208.0/22
157.205.212.0/23
157.205.214.0/23
157.205.216.0/22
157.205.220.0/23
157.205.222.0/23
157.205.224.0/19
182.93.96.0/19
202.47.136.0/22

IPv6 prefixes

All 1 prefix.

2403:6c00::/32

Similar-sized networks in Japan

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AS58791#79 GMO-I-R2 - GMO Internet, Inc.86,784

AS9600#81 SONYTELECOM - So-net Corporation82,944

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

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

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