For Altru, Blackbaud Internet Solutions, Blackbaud NetCommunity, and Online Express:

  • 205.139.104.0/22 (205.139.104.1 - 205.139.107.254)
  • 216.235.196.0/22 (216.235.196.1 - 216.235.199.254)
  • 216.235.200.0/21 (216.235.200.1 - 216.235.207.254)


For Luminate Online:

  • 66.45.103.0/25 (Transactional email)
  • 69.48.252.128/25 (Transactional email)
  • 216.235.195.0/24 (Transactional and Bulk/campaign email)


For the most up-to-date information regarding delivery IPs, please consult our Email Delivery FAQs here.

Note: These IP addresses can be added to an existing SPF Record.