Year 670 (DCLXX) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 670 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.

Until September 1999, East Timor formed part of the Indonesian numbering plan, using the country code +62, followed by area codes for the two largest cities, Dili (390) and Baucau (399). Following the violence in the wake of Indonesia's departure from the territory, most of the telecommunications infrastructure was destroyed, and Telkom Indonesia withdrew its services from East Timor.