Data Integrations is a solution that has been developed and operated separately to the Signagelive CMS. The two solutions are tightly integrated, however, there are some additional URLs that need to be whitelisted if you have blocking rules in place to allow your players to download the secured dashboard screenshots, these are:
dss.signagelive.com - port 443
dss-gateway-api.signagelive.com - port 443
dss-data-api.signagelive.com - port 443
The fixed outbound IP address for Data Integrations is 3.9.166.241
This is in addition to the main domains needed to connect players to Signagelive on a secure network.