AS55911 kazukichi

kazukichi - kazukichi · registered in Japan

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Japan#580largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#46,500of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)12 prefixes

CountryJapan745 ASNs registered there

Open AS55911 in ASN lookup Look up an IP in this network (157.66.180.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

157.66.180.0/23

IPv6 prefixes

All 12 prefixes.

2401:98a0::/40
2401:98a0:100::/43
2401:98a0:120::/43
2401:98a0:140::/42
2401:98a0:180::/41
2401:98a0:200::/39
2401:98a0:400::/38
2401:98a0:800::/37
2401:98a0:1000::/36
2401:98a0:2000::/35
2401:98a0:4000::/34
2401:98a0:8000::/33

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ASNNameIPv4 addresses

AS148985#577 ANSYSJAPANKK-AS-AP - ANSYS Japan K.K.768

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AS7257#579 MARU-NET OTO GK512

AS63781#581 KFNET-AS - Kobayashi Family Net LLP512

AS63791#582 DOORNOC-NET - doornoc512

AS63794#583 ILKS-NET - ILKS Inc.512

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