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Domain footprint: theory.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.

Web: 96.45.83.1 → Tiggee LLC · 96.45.83.150 → Tiggee LLC · 96.45.82.155 → Tiggee LLC · 96.45.82.42 → Tiggee LLC
Mail: theory-com.mail.protection.outlook.com → Microsoft Corporation
SPF sends via: support.zendesk.com · mail.zendesk.com · u1884086.wl.sendgrid.net · spf.protection.outlook.com · _spf.salesforce.com · spf.intermedia.net

Separately, 15 organisations whose name resembles “theory.com” — these may be unrelated to the domain above.

  1. THEORY AND PRACTICE OF SOFTWARE LTD 2 netblocks · RIPE registry Registry Unverified name
  2. Link-Theory-France 2 netblocks · Luxembourg Routing
  3. crooce.com - the internet company, s.r.o. 2 netblocks · RIPE registry Routing
  4. THEWORLDSERVERS.COM THEWORLDSERVERS 2 netblocks · RIPE registry Routing
  5. Cornell Theory Center 1 netblock · ARIN registry Routing
  6. CODE-THEORY 1 netblock · United Kingdom Routing
  7. Institute of Earthquake Prediction Theory and Mathematical Geophysics 1 netblock · RIPE registry Routing
  8. LINK-THEORY 1 netblock · United Kingdom Routing
  9. Matrosov Institute for System Dynamics and Control Theory of Siberian Branch of Russian Academy of Sciences 1 netblock Routing
  10. FASTWEB LINK THEORY ITALIA SRL 1 netblock · RIPE registry Registry
  11. EYC-COM-THE-QUADRANT 1 netblock · United Kingdom Routing
  12. EYC-COM-THE-QUADRANT-ADDITIONAL-IP-S 1 netblock · United Kingdom Routing
  13. THEORY-PHYSICS-ACADEMY 1 netblock · APNIC registry Routing
  14. Game_Theory 1 netblock · RIPE registry Handle
  15. UK-NINJA-THEORY 1 netblock · United Kingdom Routing