Can one FastComet account host two independent websites rather than domain aliases?
The short answer
Yes, when the plan permits multiple websites. FastComet lists this for Plus and Extra, while Starter and Essential are single-website plans. For a separate site, its cPanel guide uses a separate document root instead of sharing the main website directory.
In more detail
FastComet's plan table distinguishes hosted websites from parked domains. Its addon-domain tutorial explains how to create a domain without sharing the main document root. This distinction matters: pointing several domain names at one site is different from running separate websites with different content.
For selection, count independent sites first. Two brands with separate content and applications require a different setup from alternate domain names that should lead to the same brand. A large allowance for aliases should not be treated as permission to exceed the plan's website limit.
Our recommendation is to map each website to its intended domain, application files and database before creating it. Keep the document roots clear, verify DNS and HTTPS for each domain, and test that uploading one site's files does not replace another site's content.
Plus or Extra may be worth comparing for several sites managed by one owner, but the sites still need to fit the account's resources. If different customers require their own control-panel access or separate handovers, assess that management requirement as well instead of choosing solely from the number of websites advertised.