A description of the various services offered at geo.crox.net can be found on the geohashing wiki: https://geohashing.site/ Please do not abuse this service. In particular, if you plan to perform a large number of queries within a short timeframe, I ask that you contact me first, either through the contact function on the geohashing wiki (user:Crox), or using this link: https://ssl.crox.net/contact/