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Domain footprint: upc.ch
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:
212.35.60.254 → SUNRISEIT-NET
Mail:
mail.upc.biz → CIO-DATACENTER
SPF sends via:
spf.sunrise.net · lgsmtp.spf.upcmail.net · spf.mailjet.com · _spf.salesforce.com · et._spf.pardot.com · spf.protection.outlook.com
Separately, 9 organisations whose name resembles “upc.ch” — these may be unrelated to the domain above.