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Domain footprint: heart.org

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: 104.18.26.158 → Cloudflare, Inc. · 104.18.27.158 → Cloudflare, Inc.
Mail: mxa-004ad404.gslb.pphosted.com → Proofpoint, Inc. · mxb-004ad404.gslb.pphosted.com → Proofpoint, Inc.
SPF sends via: %{ir}.%{v}.%{d}.spf.has.pphosted.com

Separately, 20 organisations whose name resembles “heart.org” — these may be unrelated to the domain above.

  1. American Heart of Poland S.A. 32 netblocks · Poland Verified company
  2. University of Ottawa Heart Institute 6 netblocks · Canada Verified company
  3. OKLAHOMA HEART HOSPITAL, L.L.C. 3 netblocks · United States Verified company
  4. Heart Internet limited 109 netblocks · RIPE registry · extendcp.co.uk Routing
  5. Heart of Iowa Communications Cooperative 25 netblocks · ARIN registry Routing
  6. AMERICAN-HEART 11 netblocks · RIPE registry Handle
  7. Sacred Heart Hospital 5 netblocks · ARIN registry Routing
  8. HEART-OF-WORCHESTER-COL 4 netblocks · RIPE registry Routing
  9. HEART-MERCIA 4 netblocks · RIPE registry Routing
  10. FASTWEB-HEART_LIFE_CROCE_AMICA 4 netblocks · Switzerland Routing
  11. HEART-NET 3 netblocks · RIPE registry Routing
  12. PURPLE-HEART 3 netblocks · United Kingdom Routing
  13. BRITISH-HEART 3 netblocks · RIPE registry Routing
  14. HEART OF ENGLAND CONSERVATORIES LTD 2 netblocks · RIPE registry Registry
  15. ANAND-HEART-AND-MULTISPECIALITY-HOSPITAL_BW-ID-2277 2 netblocks · India Routing
  16. XA-HEART-NETBAR 2 netblocks · APNIC registry Routing
  17. Heart Technologies, Inc. 1 netblock · ARIN registry Routing
  18. Deborah Heart and Lung Center 1 netblock · ARIN registry Routing
  19. ARKANSAS HEART HOSPITAL ENCORE 1 netblock · ARIN registry Routing
  20. HEART OF ENGLAND PROMOTIONS LTD 1 netblock · RIPE registry Registry