http://sercartlin:8080/geoserver/wfs
http://testbed.alexandria.ucsb.edu:8080/gaz/adl_gaz2/dispatch
http://gnstaging.esri.com/gazetteer/Gazetteer
http://www.geoportal-idec.net/gestor/webservices/idec_ws.php
http://www.geoservicios.com/V2.0/sn/sn.asmx