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Caller IDs of Sectigo/Digicert/GlobalSign CA Validation Departments

  • Sectigo: United States +1 908 800 0434, +1 209 732 8446, +1 914 732 8446
  • Digicert: The caller ID is not fixed; calls usually start with +61 or 0061
  • GlobalSign: Random number from the Philippines (+63), or calls from Shanghai with area code 021
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