Using YQL still seems to work OK: http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20geo.placefinder%20where%20postal%3D%22122001%22%20and%20country%3D%22india%22&diagnostics=true
And this as well, http://gws2.maps.yahoo.com/findlocation?pf=1&postal=122001&country=india