Sub-domains not working


I noticed that my sub-domains stopped working properly. I upload a website to one of the sub-domains but when I want to access it through a web browser, it does not work. I paste the same route as shown in FTP (ex. ) and I get the following error: “Red - Error de Lookup DNS. URL is not valid”. The domain I’m talking about is fully hosted by dreamhost.
Could this happen because of having other websites using same domain sub-domains (some of them being redirected)?

since you haven’t told us your url i doubt we can help you. send a ticket to support.

: ) All right, I just did. Thank you.