What is the international telephone calling code for the United Kingdom?
History of telephone numbers in the United Kingdom prefix not with the conventional international prefix 00 44 28 but with a shorter Irish 048 area code which specifically covers Northern Ireland. For example, calling Belfast from London would be 028 9xxx xxxx while calling Belfast from Dublin would be 048 9xxx xxxx. However, it is also possible to make calls using the normal international 00 44 28 xxxx xxxx format. In both cases, calls are charged at a much lower rate than calls to Britain. In recent years, these arrangements are becoming less relevant as customers in both countries have access to a wide range of telephone service
UK telephone code misconceptions what telephone companies now call a National call. The new code of 100 was introduced for calling an operator. The leading 0 is not part of an area code, which is why international callers dialling into the UK must not dial it. The area code plus local number can have varying total and composite digit lengths, for historical and operational reasons, but as a rule they do not exceed 11 digits in combined length. For readability, and to distinguish geographic location, telephone numbers are often spoken, displayed and published with a gap between the area code and local number, or