The Notitiae episcopatuum Ecclesiae Constantinopolitanae nos. 4, 5 and 6 are important sources for the reconstruction of the territorial organization of the Patriarchate of Constantinople in the 9th century. There are different oppinions in the existing scholarly works about precise dating of those notitiae, ranging from the beginning of the 9th century, through the middle of it, up to its end. In this work, we analyse the content of each of the mentioned notitiae and point to certain elements which allow us to date more precisely each of them to the period between 806 and 838. [Projekat Ministarstva nauke Republike Srbije, br. 177032: Tradition, innovation and identity in the Byzantine world]