AS23836 RELATION Co., Ltd.

RELNET - RELATION Co., Ltd. · registered in Japan

IPv4 addresses4,0962 prefixes · <0.001% of announced IPv4

Rank in Japan#391largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#15,034of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS23836 in ASN lookup Look up an IP in this network (202.142.8.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

202.142.8.0/21
203.99.224.0/21

IPv6 prefixes

All 1 prefix.

2001:44a8::/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