About Constant Contact's APIs

[Trek10]

In my application, the `redirectURI` is blocked by unauthorized users. Is there a list of IP Addresses I could whitelist relevant to this request?

[John__B]

Hello Trek10,

Thank you for reaching out to Constant Contact API Developer Support. My team is here to assist outside software developers with questions about building into Constant Contact's API.

It looks like we reached out to you via email regarding this issue to request some additional information in order to better assist with troubleshooting. If you still need assistance with this, please let us know! If you haven't received our reply, please let us know via email at webservices@constantcontact.com, and reference case number 31052428.

For a full list of Constant Contact’s IP addresses and URLs, I am also including a detailed support article below.

Safelist Constant Contact web domains in a security program:

https://knowledgebase.constantcontact.com/articles/KnowledgeBase/5800-safelisting-constant-contact-w...

Please have a look and let us know if you have any other questions!

Regards,