Guinea's Horoya cruised to the group phase after beating Bandari of Kenya 1-0 in the second-leg at Moi International Centre in Nairobi.
Horoya won the first-leg 4-2 at home, while Ocansey Mandela scored the only goal of the tie in the second-leg.
El Masry booked their spot in the group phase with a comfortable 2-0 in the second-leg clash Borg El Arab Stadium.
After a 4-0 win in the first-leg, Ahmed Gomaa netted a brace to seal the victory in the second leg.
Al Nasr progressed tto the group phase after a 2-0 victory over Proline of Uganda in the second leg clash of their play-off round tie.
The game was on the edge after the first-leg ended 2-2, but it was Al Nasr who showed up in the second-leg as Khalid Almaryami and Osama's goals secured the second-leg win.
Ten-man Nouadhibou booked their spot in the group stages after a 3-2 win in the second-leg at Barbourfields Stadium.
Nouadhibou claimed a 2-0 win in the first-leg but Triangle showed a great fight to net three goals through Simba Makoni, Ralph Kawondera and Anelka Chivandire.
However, a brace from Elwely swung the tie in favour of the visitors, despite Nouadhibou playing with ten men in the last 19 minutes.
Zanaco FC had an easy ride towards the group phase after a 5-1 win at the National Heroes Stadium on Sunday.
A brace from Rodgers Kola and another two goals from Ziya Tembo, with a further goal from Ernest Mbewe gave Zanaco an aggregate win margin of 8-2, while Salif Diarra scored a consolation goal for Cano Sport.
Motema Pembe squeezed to the group stages after edging Gor Mahia 2-1 at Stade des Martyrs la Pentecote.
After the first-leg ended 1-1, he Democratic Republic of Congo side managed to win the second-leg 2-1 on Sunday afternoon.
Enugu Rangers advanced to the group stages on the away goals' rule after their 1-0 win in the second-leg against ASC Kara at Nnamdi Azikiwe Stadium.
Chinonso Eziekwe scored the decisive goal for Rangers in the second-leg, after they had lost the first-leg 2-1.