Its been a long time since MTN blocked their billing server from browsing free but now let me try my possible best in helping out for a tweak.
IP: 010.199.212.002 || PORT: 80
OPERA MINI 4.2:-
Http=
http://www.earlyface.com.ng Socket=
socket:// server4.operamini.c
om:1080
[X] Tick the Remove port from url
Host=
www.mtnonline.com OPERA MINI 5&6:-
Http=
http://80.239.243.2:80 [X] Tick the remove port from URL
Host=
www.mtnloaded.com