On March 15, 2010 the Office Tchadien de Régulation des Télécommunications introduced the following changes to Chad's telephone numbering system:
Fixed numbers:
-2 ?? ?? ?? becomes 22 ?? ?? ??
Mobile phones:
-3 ?? ?? ?? becomes 63 ?? ?? ??
-5 ?? ?? ?? becomes 95 ?? ?? ??
-6 ?? ?? ?? becomes 66 ?? ?? ??
-7 ?? ?? ?? becomes 77 ?? ?? ??
-9 ?? ?? ?? becomes 99 ?? ?? ??
Our page on calling Chad has complete info on dialing this country.