title: www.example.com is not openning while example.com is working fine how to resolve it?
body: <p>when i am trying to access my domain with www it shows an error like  "This site can’t be reached
  www.sustainabletourism.co.in’s server IP address could not be found.
  Search Google for sustainable tourism co
  ERR_NAME_NOT_RESOLVED"</p>
  
  <p>and working with out wwww.</p>
  
  <p>all dns records are set correctly</p>
  
  <p>plz help me</p>
  
  <p>thanx</p>