No-IP DUC (Dynamic DNS Update Client) for Windows PC continually checks for IP address changes in the background and automatically updates the DNS at No-IP whenever it changes. Keep your current IP address in sync with your No-IP host or domain with Dynamic Update Client (DUC desktop app). No-IP Priority Support is a priority response support channel that is staffed with a friendly and experienced Technical support team. Priority Support allows you to get the support you need as quickly as possible. Features and Highlights Secure Key Based Updates Secure DUC does not resend your No-IP credentials each time it sends an IP address update, instead, it sends an unique key for username and password for your specific Dynamic Update Client for PC. Client Tracking This feature allows you to see a list of each location where you have a DUC installed. You can also set each update Client ID to a custom name, for example , home, work, client name, etc to help keep track of each. Host Creation (Plus