John, ZS5J (also C91J, A25J, 7P8/ZS5J) mentions the following:

After a long wait – I have been living and working in Kenya for 3 years – I finally received approval for a full Kenyan callsign – 5Z4J.

My home callsign is ZS5J (South Africa), and my other callsigns allocated to me are C91J (Mozambique), A25J (Botswana) and 7P8/ZS5J (Lesotho)

At this stage I will only be confirming QSOs with LoTW. But please be patient – I received my Kenya local license today (14 August 20), so I still have to bother the ARRL to get this new callsign registered on LoTW.