Abstract: A method for call-tracking, call-tracking systems, an HTTP proxy server computer program, web server hosts, web server computer programs and computer program products are disclosed. The method comprises the following steps: forwarding a request for a web page; receiving a reply message comprising a second telephone number; retrieving and storing a first telephone number, the second telephone number, a time associated with the forwarding of the reply message, and a service provider indicator; receiving a trigger message comprising two telephone numbers; determining whether the two telephone numbers correspond to the first telephone number and the second telephone number; and, if the two telephone numbers correspond, determining, based on a time difference, whether the call has been made within a predetermined time or predetermined time interval; and, if the call has been made within the predetermined time or predetermined time interval, store information related to the call.

Abstract: A method for call-tracking, call-tracking systems, an HTTP proxy server computer program, web server hosts, web server computer programs and computer program products are disclosed. The method comprises the following steps: forwarding a request for a web page; receiving a reply message comprising a second telephone number; retrieving and storing a first telephone number, the second telephone number, a time associated with the forwarding of the reply message, and a service provider indicator; receiving a trigger message comprising two telephone numbers; determining whether the two telephone numbers correspond to the first telephone number and the second telephone number; and, if the two telephone numbers correspond, determining, based on a time difference, whether the call has been made within a predetermined time or predetermined time interval; and, if the call has been made within the predetermined time or predetermined time interval, store information related to the call.