RealTraffic status page
If you can reach this page and there are sensible numbers displayed below, chances are everything is up and running and fine!
Number of aircraft tracked in the past 60 seconds:
Number of position records stored since the beginning of the hour: 0
Currently flying user aircraft:
|Hex ID||Callsign||Type||Registration||Latitude||Longitude||Track||Altitude||Ground Speed||From||To||KML Download|