Outlook.com Outbound IP Space

Outlook.com sends e-mail from the following IP addresses:
  • 65.54.190.0/26
  • 65.54.190.64/26
  • 65.54.190.128/26
  • 65.54.190.192/26
  • 65.55.116.0/26
  • 65.55.111.64/26
  • 65.55.116.64/26
  • 65.55.111.128/26
  • 65.55.34.0/26
  • 65.55.34.64/26
  • 65.55.34.128/26
  • 65.55.34.192/26
  • 65.55.90.0/26
  • 65.55.90.64/26
  • 65.55.90.128/26
  • 65.55.90.192/26
  • 65.54.51.64/26
  • 65.54.61.64/26
  • 207.46.66.0/28
  • 157.55.0.192/26
  • 157.55.1.128/26
  • 157.55.2.0/26
  • 157.55.2.64/26