AS18127 — IBARAKI Ibaraki Prefectural Government

AS18127 announces 4 IPv4 prefixes covering 3,584 addresses and 1 IPv6 prefixes.

About this network

The AS handle IBARAKI is held by Ibaraki Prefectural Government.

What it's used for

• The address space carries government infrastructure, evidenced by netnames Ibaraki-CIDR-BLK-JP and IBARAKI-PREF registered to the Japan Network Information Center.
• The AS announces 3584 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.

Notable

• All registrants are listed as Japan Network Information Center; IRT-JPNIC-JP, which is consistent with the holder being a Japanese government entity.
• The address inventory is compact, consisting of a /21, a /22, and two /24 blocks within the 219.112.224.0/20 range, alongside a single /32 IPv6 prefix.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 219.112.225.0/24
• 219.112.226.0/24
• 219.112.228.0/22
• 219.112.232.0/21
• 2404:e480::/32

Upstream networks

• AS59103 SoftEther Corporation

Downstream networks

• AS59120 Tsukuba Internet Service Corporation

Adjacent networks

• AS59103 SoftEther Corporation
• AS59120 Tsukuba Internet Service Corporation