AS131896 SSI Lab Inc.

SSI-Lab - SSI Lab Inc. · registered in Japan

IPv4 addresses6,1446 prefixes · <0.001% of announced IPv4

Rank in Japan#367largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#12,496of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS131896 in ASN lookup Look up an IP in this network (103.51.4.1) All networks in Japan

IPv4 prefixes

All 6 prefixes, in address order.

103.51.4.0/22
103.52.148.0/22
103.54.184.0/22
103.198.108.0/22
103.239.16.0/22
219.100.240.0/22

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS23613#364 NMTNET - New Media Tokushima Co.,ltd.6,144

AS58788#365 CHIRORO - Chiroro-Net Co.,Ltd.6,144

AS59094#366 S2-NET - esu2 Corporation6,144

AS137445#368 AS-PFLINK-JP - PF LINK SYSTEMS5,888

AS139468#369 DCI-AS-AP - DC Communications Inc.5,632

AS131893#370 RICOH-NET - RICOH Company, Ltd.5,632

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