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Domain footprint: happymail.co.jp

Resolved live just now — where this domain's services actually run, with each address attributed by OrgIndex. A DNS observation, not registry data: many organisations run entirely on providers' networks and hold no IP space of their own.

Web: 210.161.27.162 → JPNIC-NET-JP · 111.108.188.22 → KDDI CORPORATION · 210.161.27.149 → JPNIC-NET-JP · 111.108.188.20 → KDDI CORPORATION

Mail: mail01.happymail.co.jp → KDDI CORPORATION

SPF sends via: willap.jp

No organisation is registered under the name "happymail.co.jp"

The addresses above are where it actually runs — resolved live and attributed to the operator that registered each range. That is the answer for a domain; a name match here would only add something if a company were registered under this name too.

Sites hosted on a provider (OVH, Cloudflare, AWS and the like) show that provider, because the address space is registered to them rather than to the site's owner.