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Domain footprint: optim.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: 153.125.235.56 → SAKURA LTD.
Mail: optim-co-jp.mail.protection.outlook.com → Microsoft Corporation
SPF sends via: spf.protection.outlook.com · _spf.optim.co.jp · _spf_biz.optim.co.jp · sender.zcsend.jp · mail.zendesk.com · 243271648.spf01.hubspotemail.net

Separately, 2 organisations whose name resembles “optim.co.jp” — these may be unrelated to the domain above.

  1. BTS-OPTIM-CONSUMERCHOICES 2 netblocks · RIPE registry Routing Unverified name
  2. BTS-OPTIM-CONVEYCENTRIC 1 netblock · RIPE registry Routing