Beginning the week of July 29th, the IP address for api.opendns.com has changed. Please ensure that any firewall rules are updated to allow traffic from the Virtual Appliance (registration, sync), AD Connector (registration, sync), and roaming clients (registration, validation) to our new api.opendns.com IP address. Failure to allow access to this new IP will result in VAs appearing offline indefinitely. DNS resolution on the VA will not be impacted and AD integration will continue to function; however, changes to VA settings will not propagate from the dashboard.
Old IP: 126.96.36.199
New IP: 188.8.131.52
Early notification for this change was posted as an in-portal dashboard message as well as here in the announcements portal: https://support.umbrella.com/hc/en-us/articles/360028522032-Important-firewall-changes-may-be-required-for-Umbrella-and-OpenDNS-users