works only
A dynamic IP will work until it is changed by an ISP lease expire. You then have to let everybody know the new IP address. I have had my cable connection for 4 months and my IP has never changed although it is a dynamic IP. There are services ( some free and some pay) that will give you a www name and some software that will update your IP everytime it changes. So all a person needs to know is the www name. One such service is