AS17931 Netforest,Inc.

NETFOREST - Netforest,Inc. · registered in Japan

IPv4 addresses20,4807 prefixes · <0.001% of announced IPv4

Rank in Japan#245largest network in JP by IPv4 space, of 724 · 0.01% of JP

Rank worldwide#6,051of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS17931 in ASN lookup Look up an IP in this network (103.238.236.1) All networks in Japan

IPv4 prefixes

All 7 prefixes, in address order.

103.238.236.0/22
202.165.160.0/20
203.153.64.0/20
203.191.136.0/21
211.19.48.0/20
218.45.16.0/20
219.100.160.0/22

IPv6 prefixes

All 1 prefix.

2402:4700::/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