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Domain footprint: drei.com
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:
213.94.80.187 → H3GAustriaUTRAN
Mail:
mail.drei.at → H3GAustria
SPF sends via:
_spf_ipv4.drei.at · spf.protection.outlook.com · _spf.rexx-suite.com · spf.dialog-mail.com
Separately, 6 organisations whose name resembles “drei.com” — these may be unrelated to the domain above.