Istat rhymes with:
austat, eichstadt, eichstaedt, eisenstadt, eurostat, fustat, angstadt, austat, eichstadt, eichstaedt, eisenstadt, eurostat, fustat, halberstadt, mittelstadt, neustadt
Istat sounds like:
iced, iceskate, ikeda, ishida, isoda, issued, istituto, isty, izatt, izod