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AS18127 Ibaraki Prefectural Government

Ibaraki - Ibaraki Prefectural Government · registered in Japan

IPv4 addresses3,5844 prefixes · <0.001% of announced IPv4
Rank in Japan#420largest network in JP by IPv4 space, of 724 · <0.01% of JP
Rank worldwide#16,937of 79,396 networks with IPv4
IPv61 x /32 (65,536 x /48)1 prefixes
CountryJapan745 ASNs registered there

IPv4 prefixes

All 4 prefixes, in address order.

  • 219.112.225.0/24
  • 219.112.226.0/24
  • 219.112.228.0/22
  • 219.112.232.0/21

IPv6 prefixes

All 1 prefix.

  • 2404:e480::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses
AS17953#417 ICO - BroadBand Security, Inc.3,840
AS45688#418 UT-NSRG - The University of Tokyo Interfaculty Initiative in Information Studies3,592
AS149428#419 CODE200-AS-AP - Code200, UAB3,584
AS18383#421 CAHI-AS-JP - CAHI Corporation,3,584
AS4697#422 NTTV6NET - Nippon Telegraph and Telephone Corporation3,328
AS151374#423 IWK-WORKS - IX-layers, Inc.3,328

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