Rather try
bs2.infosat.net
IS is currently being phased out of Sentech
Edit - bdt, using the csir is not a bad move as they are the only site in SA to my knowledge that has an official and formal connection to the Boulder, Colorado Atomic Clock. This is THE master global time-keeper
(I took a photo of this atomic clock, during a visit back in 1997, if anyone wants to see what it looks like)
<font size="1"><font color="black">Bay of Plenty :</font id="black"><font color="blue"> Signal 48% - SNL 17 - ber 71% :</font id="blue"><font color="green"> D-Link DI-604 - PPPoE :</font id="green"><font color="orange"> 8dBi Patch Antenna :</font id="orange"> Firmware 5.0.1.62</font id="size1">