AS37889 J-PARC Center

JPARC-NET - J-PARC Center · registered in Japan

IPv4 addresses1,7923 prefixes · <0.001% of announced IPv4

Rank in Japan#482largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#25,214of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS37889 in ASN lookup Look up an IP in this network (192.153.105.1) All networks in Japan

IPv4 prefixes

All 3 prefixes, in address order.

192.153.105.0/24
192.153.106.0/23
192.153.108.0/22

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS139345#479 HYVEMANAGEDHOSTINGCORPINC-AS-AP - Hyve Managed Hosting Corp Inc1,792

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AS24286#481 WNI-AS - Weathernews,Inc.1,792

AS38643#483 U-Cloud - UNIADEX, LTD.1,792

AS58648#484 AT-I-NET - AT-I, Inc.1,792

AS131914#485 DD-NET - Rakuten Group, Inc.1,792

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