 According to historian and geographer K. Iswara Dutt, Kammanadu consisted of the Narasaraopet, Sattenapalle, Bapatla and Ongole taluks, including the villages of the Addanki area.It was bounded by Srisailam in the west, Palnadu and Velanadu in the north, the Gundlakamma river in the south and the Bay of Bengal in the east.The erstwhile Vinukonda taluk and the Chirala taluk are also often included, which are anyway indicated by the boundary at the Gundlakamma river.