Brighthouse issues

We are seeing that all our customers in the Brighthouse Orlando, FL market that would make outbound connections on TCP port 3306 suddenly can't connect to us now. This happened suddenly mid day today. Other ISPs can still make the same outbound connections. VPN connections on Brighthouse into the same IP block work fine, just outbound port 3306 is being blocked now. If anyone has details as to an emergency maintenance or change that occurred, I'd like to be able to pass it along to our customers. Thanks, Jared