AS17955 Densan Co., Ltd.

AVISNET - Densan Co., Ltd. · registered in Japan

IPv4 addresses35,3286 prefixes · 0.001% of announced IPv4

Rank in Japan#198largest network in JP by IPv4 space, of 724 · 0.02% of JP

Rank worldwide#4,573of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS17955 in ASN lookup Look up an IP in this network (103.152.138.1) All networks in Japan

IPv4 prefixes

All 6 prefixes, in address order.

103.152.138.0/23
120.88.16.0/20
192.47.64.0/21
202.247.192.0/18
203.223.48.0/20
210.56.160.0/19

IPv6 prefixes

All 1 prefix.

2406:8000::/32

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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