Had 3 calls this evening from this same number, nothing I recognized. So I did a bit of detective work and found that the dialing code was Somalia. I know nobody from Somalia, nor do I know of anyone visiting that area.
The number comes through like this +252 24131192 to a UK mobile phone that is with the TPS.
I let it ring and ring the first time, it rang for a good 4 minutes, played an entire song I have as a ringtone, then after 4 or 5 minutes had passed it rang again, not as long, it rang off and then rang again just as soon as it had stopped.
Be very wary about any number you do not recognize, especially this type of call which have been known to REVERSE CHARGE YOU and you CANT hang up thus the call costs you a fortune, never give information if you accidentally pick it up and block any number that comes through that you don't recognize and is a nuisance.