Year 991 (CMXCI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.

International Telecommunications Public Correspondence Service (ITPCS) is an International Telecommunication Union ITU proposal regarding the allocation of country code +991 for use in some form of individual-based international numbering plan. The ITU is the United Nations specialized agency for information and communication technologies [1]

Year 991 (CMXCI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.

International Telecommunications Public Correspondence Service (ITPCS) is an International Telecommunication Union ITU proposal regarding the allocation of country code +991 for use in some form of individual-based international numbering plan. The ITU is the United Nations specialized agency for information and communication technologies [1]