Year 353 (CCCLIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Magnentius and Decentius (or, less frequently, year 1106 Ab urbe condita). The denomination 353 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

The island of Ireland is divided in two jurisdictions: the Republic of Ireland and Northern Ireland.

Numbers on the Irish Telephone Numbering Plan are regulated and assigned to operators by ComReg.

Year 353 (CCCLIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Magnentius and Decentius (or, less frequently, year 1106 Ab urbe condita). The denomination 353 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

The island of Ireland is divided in two jurisdictions: the Republic of Ireland and Northern Ireland.

Numbers on the Irish Telephone Numbering Plan are regulated and assigned to operators by ComReg.