Withholding number when dialling abroad?

Question

Does anyone know if it's possible to withhold your telephone number when dialling Spain? I realise they cannot see your exact number, but I'm pretty sure they can tell it's an international call. Is there anyway of stopping them from knowing whether it's from the same country or not? 141 doesn't seem to work for foreign numbers.

Answer 1

no...you cant use it abroad, but you always can use a calling card!!

Answer 2

did you try dialing *67?  Im not sure if that works when calling international, but that is the code to block out caller ID>