The acts and protocols of the church councils convened in the Greater Armenia and Albania (Ałuank‘) in the 5th-7th centuries, which were systematized by the Armenian catholicos Yovhannēs III Ojnec‘i (717-728) in the “Kanonagirk‘ Hayoc‘” (Armenian Book of Canons), the official correspondence, messages by the Armenian, Iberian and Albanian patriarchs, nobles, which were collected by the catholicos Komitas I Ałc‘e c‘i (615-628) in the “Girk‘ T‘łt‘oc‘” (The Book of Letters), as well as the numerous historical monuments of the 5th-11th centuries in Classical Armenian, Georgian, Greek and Syrian languages allow the author to restore:
1. The territories under the ecclesiastical and canonical jurisdiction of the Armenian Catholicosate with its residence in Dvin since 470e remained mainly unchanged. They were occupying those regions (ašxarhs) of the Greater Armenia that after its partiton in 387 had reached to Sasanian Iran and in 428 included as parts of the Marzpanate of Armenia (mid.-Pers. Arminān) and partially as parts of the marzpanates of Assyria (mid.-Pers. Asūr) and Atropatena (mid.-Pers. Ādurbādagān). The number of the dioceses of the Armenian Catholicosate in Dvin were growing: in the early of the 6th c. there were 24 dioceses but in the middle of that century - 28.
2. This jurisdiction was violated during 16 years: the Greater Armenian territories ceded by the Sasanians’ to Byzantium in 591, from 594 to 610 were passed into submission of the Armenian-Chalcedonian patriarchal throne in Avan, which was established by Constantinople.
3. The protectorate of the Armenian Catholicosate in Dvin covered the Albanian, partially autocephalous, church with its residence in Partaw (before 551 - in Čoła/Č‘ora) which was consisted of eight dioceses. It covered as well as one more partially autocephalous church - Iberian with its residence in Mtskheta (Mc‘xet‘a), but only since the late of the 5th c. and until 607. This Iberian church was consisted of 12 dioceses in the late of the 5th c., 24 dioceses in the early of the 6th c. Finally, on the eve of the ecclesiastical division between Armenia and Iberia in the early of the next century it consisted of 35 church units.