Hi Mark, If you call our 24/7 Customer Support, they will be able to provide you with the last IP address that we have recorded for your Host, If the computer is connected to the Internet and the GoToMyPC Host software is able to ping our servers, the IP address will be updated. https://support.logmeininc.com/gotomypc/help/how-do-i-contact-customer-support-1107395211