in 1998 when I was building my first websites the "ISP" used to provide data on who had passed by and whether they came back to the site again.Only part of their mail address was given, so you couldn't mail them,but certainly had country of origin as an extra.
When the ISP's became rich--or in the case of Google (who used to ask us to advertise their site) rich as "Croseus" they ceased to offer this service.The technology still exists so are "you" plotting the activity rate of your customers?.Could give you a good idea of what time to launch a new thought to get a quick result!