Welcome to Capamai.

• GET /cap/20021 => [{"province":{"abbr":"MI","name":"MILANO"},"cap":"20021","region":"LOMBARDIA","city":"BARANZATE"},{"province":{"abbr":"MI","name":"MILANO"},"cap":"20021","region":"LOMBARDIA","city":"BOLLATE"}]
• GET /cap/20135 => [{"province":{"abbr":"MI","name":"MILANO"},"cap":"20135","region":"LOMBARDIA","city":"MILANO"}]
• GET /cap/70026 => [{"province":{"abbr":"BA","name":"BARI"},"cap":"70026","region":"PUGLIA","city":"MODUGNO"}]

• GET /cities/Bari => {"province":{"abbr":"BA","name":"BARI"},"cap":["70121","70122","70123","70124","70125","70126","70127","70128","70129","70131"],"region":"PUGLIA","city":"BARI"}
• GET /cities/Bolzano => {"province":{"abbr":"BZ","name":"BOLZANO/BOZEN"},"cap":["39100"],"region":"TRENTINO-ALTO ADIGE","city":"BOLZANO"}

JSONP is also supported via the callback parameter

A lot more queries are possible. Drop a mail to capamai AT mikamai.com to request features.