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Domain footprint: musc.edu

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: 128.23.35.87 → Medical University of South Carolina

Mail: mxa-001b3801.gslb.pphosted.com → Proofpoint, Inc. · mxb-001b3801.gslb.pphosted.com → Proofpoint, Inc.

SPF sends via: %{i}._ip.%{h}._ehlo.%{d}._spf.vali.email

No organisation is registered under the name "musc.edu"

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.