As a service provider, the minimum prefix you can get from AFRINIC is a /32 Provider Aggregatable prefix.
The current policy makes it mandatory for LIR members to announce an IPv6 PA allocation within 12 months and, to the extent practicable, as a single aggregated prefix, so as to minimize global routing table growth.
In some very special cases, space may not be announced, however, it must be duly justified by the member to AFRINIC.