The conferences for the Pro14 championship have been revamped for the next two seasons, with six teams switching from one to the other.
Champions Leinster are with runners-up Glasgow Warriors, semi-finalists Ulster and top-ranked Welsh team Ospreys in Conference A.
Munster and Connacht are in Conference B with Edinburgh, Blues and Scarlets.
The draw is based on 2018-19 finishing positions and allows for an equal spread of teams from each nation.
The new conference make up will stay in place until the end of the 2020-21 season.
Conferences were introduced for the 2017-18 season when the championship was expanded from 12 to 14 teams with the addition of South African outfits Southern Kings and Cheetahs.
The 2019-20 season is not expected to start until the weekend of 27 September because of the World Cup.
The 21-match season allows teams to play home and away derbies against all the teams from their own union, irrespective of which conference they are in.
2018-19: Glasgow, Munster, Connacht, Ospreys, Cardiff Blues, Cheetahs, Zebre
2019-20: Glasgow, Leinster, Ulster, Ospreys, Dragons, Zebre, Cheetahs.
2018-19: Leinster, Ulster, Benetton, Scarlets, Edinburgh, Dragons, Southern Kings
2019-20: Edinburgh, Munster, Connacht, Cardiff Blues, Scarlets, Benetton, Southern Kings.
Source: BBC Rugby Union News