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Domain footprint: sdsc.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:
132.249.112.52 → San Diego Supercomputer Center
Mail:
inbound.ucsd.edu → Proofpoint, Inc.
SPF sends via:
spf-0016e101.pphosted.com · mail.zendesk.com · amazonses.com · spfa.mailendo.com · spf.protection.outlook.com