If you haven't heard of this, you should now know that MTN introduced the hourly data plans for their internet subscribers. It is based on timing, although, MTN later introduced a fair usage model on their hourly plan. Anyway, I would give you the subscription codes for the MTN hourly plans below.
Bundle Plan (Time) Validity Period Price Keyword
» 2 Hours 2 Days N250 2H
» 20 Hours 7 Days N1,500 20H
» 100 Hours 30 Days N5,000 100H
» 300 Hours 90 Days N13,000 300H
I hope you find this list of MTN hourly data plans and subscription codes useful.