Translations:QS:Location mapservice/330/en
From LimeSurvey Manual
OpenStreetMap via MapQuest uses GeoNames for the search box (with a user created for LimeSurvey). If you need to be sure that your access has not been restricted or if you use the GeoNames API a lot, the best best solution is to use GeoNames Webservices and set it up in your config.php file.