api.constantcontact.com IP Address(es)

[askrenes]

api.constantcontact.com resoves to three different IP addresses. My company has a very tight firewall, and I need to know if all three IPs need to be allowed through in order to use the API. Can anyone confirm one way or another?

api.constantcontact.com is an alias for constantcontact.api.mashery.com.
constantcontact.api.mashery.com is an alias for sb-constantcontact.mashery.com.
sb-constantcontact.mashery.com is an alias for api-constantcontact-com-j-975340139.us-east-1.elb.amazonaws.com.
api-constantcontact-com-j-975340139.us-east-1.elb.amazonaws.com has address 23.21.248.46
api-constantcontact-com-j-975340139.us-east-1.elb.amazonaws.com has address 174.129.228.63
api-constantcontact-com-j-975340139.us-east-1.elb.amazonaws.com has address 54.235.131.37

[Rich_M541]

Hello, 

You do need to whitelist all 3 IP addresses that you've identified.

Thanks,

[askrenes]

Looks like you've stopped accepting handshakes over TLS v1.0. When did this change happen?

[Rich_M541]

Check this page for whitelisting, SSL, and handshake info:

http://support.mashery.com/docs/read/proxy_information/Security_Options#whitelist

Let me know if you are able to get the info you need here.

[askrenes]

The IPs seem to have changed again, breaking most of my applications that interface with Constant Contact.

Is it possible to get a list of IPs specifically related to the APIs like this one about mail sending IPs:

https://knowledgebase.constantcontact.com/articles/KnowledgeBase/5287-what-should-i-do-if-my-contact...

[Jimmy_D]

Hello,

Our external IPs for our API come from Mashery and they can change without notice. However Mashery uses Amazon's Elastic Load Balancer. You can check this website (http://docs.aws.amazon.com/general/latest/gr/aws-ip-ranges.html) for how to get a listing of their currently used IPs. Specifically look for region us-east-1 and service EC2.