SPSite.HostHeaderIsSiteName Property
Gets a Boolean value that specifies whether the host header is used instead of the server-relative path to uniquely identify the site collection.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
Property Value
Type: System.Booleantrue if the host header is used instead of the server relative path to uniquely identify the site collection; otherwise, false.