Yes, you can use different web addresses for your IONOS hosting packages. You can host as many web addresses as you like, from hosting multiple subdomains to hosting unlimited external domains. Other features include URL-Masking, domain access without the www. prefix, and DNS Management. URL-Masking is a type of domain forwarding, which automatically sends the user to the destination page without changing the URL address. A Domain Name System (DNS) is a system that translates a domain name as we know it into the computer recognized IP address form. This enables computers to communicate in their IP language. By having access and control over your DNS you can point your domain names to any static IP address or host name, use the IONOS name servers to set your own mail servers, point your external domains to your IONOS servers, and even transfer your external domains to IONOS for free.