NET IS SAT provides its users with the opportunity to keep their fixed geographical telephone numbers if they change their supplier.
From August 6th, 2010, applications for portability are filed only with the recipient operator The address for NET IS SAT is:
168 Naycho Tsanov, fl. 2 (map)
All requirements and conditions can be found in the General Terms of relations with voice service users: Download.
According to “Decision № 191″ from March 9th, 2009 of CRC when a call to a ported number is made a single beep is heard to inform the caller that the number is ported.