This change provokes an error in citing mobile numbers, quite similar to that of erroneous UK telephone codes. The first digit of the subscriber number is most often cited as part of the access code, e.g. (0)887 XXXXXX , instead of the correct (0)88 7XXXXXX . This error remains for new subscriber numbers and even for Vivacom numbers which have never been six digits long. However, unlike the situation in UK, this error has no effect since a mobile number must always be dialled with the access code.Dialing to a mobile network requires the access code together with the 0 . Dialing from a mobile network requires either an area or access code with the trunk or international format ( (0)YY YXXXXXX or +359 YY YXXXXXX ). The latter becomes a normal practice, since most people use number lists of their handsets, more people use their phones in roaming and all four operators show the caller ID in international format.