To ensure the highest level of security, all data is encrypted when not at rest. All solutions that deal in Personal Identifying Information (PII) data are not stored on Lender Toolkit databases when at rest. 

We use some third parties in our products and services. A comprehensive list of the sources are listed below. To ensure all Lender Toolkit products work correctly, please add all of the following domains to your whitelist:


  1. https://www.lendertoolkit.com - LTK Website link.
  2. https://help.lendertoolkit.com/ - LTK Help documents link
  3. https://api.lendertoolkit.com - Used in all of LTK's newer NG based plugins.
  4. https://api.ltk.ai - LTK's API
  5. https://ui.ltk.ai/ - LTK's API for PowerTools with web interface
  6. https://api.portal.ltk.ai - LTK's API for the LTK portal
  7. https://browser-intake-datadoghq.com - Datadog URL for diagnostics/metrics
  8. https://portal.lendertoolkit.com - LTK's client login site.
  9. https://maas.ltkls.com/ - LTK MAAS Endpoint
  10. https://api.elliemae.com - Encompass on the Web endpoint
  11. https://sso.ice.com - ICE SSO URL (Production)
  12. https://sso.api1.ice.com - ICE SSO API (Testing)
  13. https://sso.ice.comand - ICE SSO URL (Testing)
  14. https://sso.dc3test.ice.com - ICE SSO URL #2 (Testing)
  15. https://www.zipcodeapi.com - Used in some products to get the longitude and latitude of a zip code. 
  16. https://toolshed.s3-us-west-2.amazonaws.com - Used when activating PowerTools. 
  17. https://ltk-settings.s3.us-west-2.amazonaws.com/  PowerTools settings storage
  18. https://fonts.googleapis.com -  Google Fonts used in web-style PowerTools
  19. https://www.fema.gov - Used to lookup disasters in the area of the property address. 
  20. https://data.hud.gov - Used to post the present address to and get results for Home Counseling.
  21. https://www.mersonline.org - Used to register MIN numbers. 
  22. https://www.mersonlinetraining.org - Used to register MIN numbers during testing. 
  23. https://secure.shippingapis.com - Used to look up the property address using this domain.
  24. https://apitools.ltkls.com - Used by the LTK MERS Automation PowerTool for address parsing.
IP Addresses to Whitelist:
  • 158.224.70.11 - MERS Plugin
  • 158.224.83.47 - MERS Plugin
For receiving emails from Lender Toolkit, we recommend your IT whitelist the following IP addresses:

  • 209.222.82.237
  • 54.240.27.190
  • 158.247.18.143
  • 54.174.52.39
  • 54.174.52.5
  • 54.174.59.200
  • 54.174.60.186
  • 167.89.32.12
  • 3.93.157.85
  • 3.93.157.86
  • 3.93.157.87
  • 3.93.157.88
  • 52.55.208.120
  • 52.200.89.15
  • 192.254.127.96 - 192.254.127.127
  • 54.174.59.92/30
  • 54.174.59.96/30
  • 18.208.124.253
  • 18.208.124.254
  • 54.174.61.28
  • 54.174.61.29
  • 54.174.61.30
  • 54.174.61.31
Note: Emails from remote LTK personnel may come from a different IP

In addition, please add "info@lendertoolkit.com" and "support@lendertoolkit.com" to your local email client's safe recipient list to ensure our emails do not go into your junk folder.