Many times people find it very difficult to identify which network has a particular digits, this started from the era of 081,090,070 etc. Here are the four main phone networks in Nigeria, their digits and
 prefixes to help you understand better.                      
MTN Number digits and Prefixes
0803
0806
0703
0706
0813
0816
0810
0814
0903.            
                                                   
GLO Number digits and Prefixes
0705
0815
0805
0807
0811
0905.              
                                                   
Airtel Number digits and Prefixes
0708
0802
0808
0812
0701
0902.                                  
                             
Etisalat Number digits and Prefixes
0809
0817
0818
0909
0908.