Calling SharePoint web services

After some research on calling SharePoint webservices, it seems that using the following URL:

https://yoursite.sharepoint.com/_vti_bin/lists.asmx?wsdl

would allow me to request data from SharePoint sites that I have access to.

If that URL doesn’t return anything (404), does that mean that the webservices have been disabled by the Admin (Enterprise context)?

Thanks in advance.