http://edwin.baculsoft.com/2015/08/database-kodepos-seluruh-indonesia/
https://github.com/edwinkun/database-kodepos-seluruh-indonesia
http://andrienuno.blogspot.co.id/2015/02/provinsi-kabupaten-kecamatan-kode-pos.html
https://tokofile.com/market/detail/database-kode-pos-indonesia-2015-format-sql-excel-dan-pdf
http://www.whatismyzip.com/
https://github.com/heyman/geolocation-throttle
http://dev.w3.org/geo/api/spec-source.html
http://heyman.info/
http://www.geonames.org/postal-codes/
