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Domain footprint: gruposantander.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.
Mail:
mx1.hc5532-55.iphmx.com → Cisco Systems Ironport Division ·
mx1.santandergroup.c3s2.iphmx.com → Cisco Systems Ironport Division ·
mx2.hc5532-55.iphmx.com → Cisco Systems Ironport Division ·
mx2.santandergroup.c3s2.iphmx.com → Cisco Systems Ironport Division
SPF sends via:
santandergroup.net · spf1.gruposantander.com · spf2.gruposantander.com · spf3.gruposantander.com · spf4.gruposantander.com · spf5.gruposantander.com
No organisation is registered under the name "gruposantander.com"
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.