Noting that with the ‘020’ mobile prefix, there are eight following digits, so the number space reserved for mobile services is enough to accommodate 80 million number assignments (noting that digits ‘0’ and ‘1’ are not used for the first digit of operator indicators numbers). The one inconvenience in the current scheme is that ‘020’ for mobiles is very similar to ‘02X’ – where X is 1-9 that is used for fixed services. From a consumer perspective it would be advantageous to designate a separate single digit for mobile services that is different from other services. To do this will require some revision to the current allocations of number space – essentially the fixed services number space. However as this would disrupt the numbering of all mobile users for a small advantage this action is not recommended. The key question in regard to numbering of mobile services is whether the current number space is adequate for the expected life of the number plan.