Estan rhymes with:
cheston, freston, hesston, heston, intestine, meston, predestine, preston, reston, teston, westen, weston
Estan sounds like:
eastham, eastin, eastman, easton, echidna, eckstein, ecosystem, ecton, eighteen, ejection, equation, equitation, esteem, estonia, estonian, exaction, excitation, execution, executone, exhaustion, exton, eyestone