HTTP Injection API Connectivity
The URL for our HTTP Injection API is [ https://inject.socketlabs.com/api/v1/email ]. The IP address resolving for the domain [ inject.socketlabs.com ] can change frequently because we employ widely geographically-distributed servers for high availability. Please ensure that your connections to our services are not programmed with specific IP addresses and are properly resolving and connecting to [ inject.socketlabs.com ].
We only accept connections using HTTPS on port 443.
If you must use a firewall to restrict your outbound HTTP traffic to specific IP addresses, the following is a list of IP addresses we may use from time to time. We do not send out notices if these IP addresses change so if you are having connectivity issues, please check back here.
Those able to enter CIDR ranges to their firewalls should open up 188.8.131.52/20 as future upgrades may result in the inclusion of other IP addresses in this range which is a direct ARIN assignment to SocketLabs.