rMs_000
For your point on adding a zero to the end of each number:

Adding a “0” wouldn’t allow meeting the demand for the numbers needed; 36 million mobile and nine million fixed telephone numbers are being created by doubling the first digit. ETR numbers are an operator specific issue.
Supreme Council of Information and Communication Technology (ictQATAR)
Website: http://www.ictqatar.qa
Blog: http://www.digitalqatar.qa