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Domain footprint: prom23.ru
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:
46.36.220.223 → PAGM-NET
Mail:
mx.yandex.net → YANDEX LLC
SPF sends via:
_spf.yandex.net · spf.unisender.com
Separately, 7 organisations whose name resembles “prom23.ru” — these may be unrelated to the domain above.