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Domain footprint: defense.net

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: 107.162.128.4 → F5, Inc.
Mail: mx1.hc5801-97.iphmx.com → Cisco Systems Ironport Division · mx2.hc5801-97.iphmx.com → Cisco Systems Ironport Division
SPF sends via: mail.zendesk.com

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

  1. ARMOR DEFENSE INC. 19 netblocks across 2 companies in this group Corporate group
  2. INSTITUTE FOR DEFENSE ANALYSES 35 netblocks · United States Verified company
  3. DEFENCE HOLDINGS PLC 5 netblocks · United Kingdom Verified company
  4. KRATOS DEFENSE & SECURITY SOLUTIONS, INC. 2 netblocks · United States Verified company
  5. רפאל מערכות לחימה מתקדמות בע"מ 1 netblock · Israel Verified company
  6. United States Department of Defense 15,135 netblocks · usmc.mil Routing
  7. FR-SAFRAN-ELECTRONICS---DEFENSE--LB_INTERNET 15 netblocks · RIPE registry Routing
  8. FR-SAFRAN-ELECTRONICS-AND-DEFENSE 11 netblocks · RIPE registry Routing
  9. FR-SAFRAN-ELECTRONICS-AND-DEFENSE--LB_INTERNET 10 netblocks · RIPE registry Routing
  10. MULTIBURO-LA-DEFENSE 9 netblocks · Luxembourg Routing
  11. FR-SAFRAN-ELECTRONICS-ET-DEFENSE 8 netblocks · RIPE registry Routing
  12. ATEAC-LA-DEFENSE 8 netblocks · Luxembourg Routing
  13. Defense Advanced Research Projects Agency 7 netblocks Routing
  14. Environmental Defense Fund 7 netblocks · ARIN registry Routing
  15. HQ-GLOBAL-LA-DEFENSE 7 netblocks · Luxembourg Routing
  16. Secretariat General de la Defense et de la Securite Nationale 6 netblocks · RIPE registry Routing
  17. FR-MINISTERE-DE-LA-DEFENSE 6 netblocks · RIPE registry Routing
  18. FR-BA-DEFENSE-REP-FED-ALLEMAGNE-EN-FRANCE--LB_INTERNET 6 netblocks · RIPE registry Routing
  19. DEFENSE-COMMUNICATION-SERVICES-PADERBORN-NET 6 netblocks · Germany Routing
  20. Ministry of Defense 5 netblocks · RIPE registry Routing