The Approved/Blocked URL List supports the * wildcard character.
Wildcard Support
| Wildcard | Supported
                              Format | Invalid
                              Format | 
| The * character
                              matches zero or more characters | The following URLs using the wildcard are acceptable: 
 Filtering only supports the FQDN, not the path. For
                              example: 
 | The following URLs ending with a wildcard are not
                              acceptable: 
 The following URLs with the wildcard as the last character
                              in the host name are not acceptable: 
 | 
 
		