Unfortunately there is no USSD code to check your Afrihost data balance. This has to be done via the client zone.
Client zone login: https://clientzone.afrihost.com
In client zone you can view your airtime and data balance.
If you have an Afrihost voice and data sim then you are able to check the airtime balance only by dialing:
If you require further assistance please email: firstname.lastname@example.org
or contact Afrihost support on 011 612-7200
or via live chat support on our website
alternatively you may request a call back by smsing the word 'help' to 32541