title: Get mobile phone operator from android CallLog
body: <p>is it possible to get the name of the mobile phone operator from the android <a href="http://developer.android.com/reference/android/provider/CallLog.Calls.html" rel="nofollow">CallLog</a>? E.g. in Germany phone numbers have xxxx - xxxxxxx form.</p>
  
  <p>Normally the first 4 numbers of the phone number are an identifier for the mobile phone operator. But in Germany you can switch the operator, porting your mobile phone number to your new operator. So the xxxx itself is no longer a hint what operator is behind a phone number or a call.</p>
  
  <p>Is it possible to get such information from the CallLog or any other log of the android phone?</p>