That depends whether you're referring to the one in Kenya or the one in Uganda. Please specify the country in your question.
The telephone area code for Bwizibwera, Uganda, is 0485, or +256 485 in international format.
The telephone area code for Gulu, Uganda, is 0471, or +256 471 in international format.
The telephone area code for Hoima, Uganda, is 0465, or +256 465 in international format.
The telephone area code for Kabale, Uganda, is 0486, or +256 486 in international format.
The telephone area code for Lira, Uganda, is 0473, or +256 473 in international format.
The telephone area code for Masaka, Uganda, is 0481, or +256 481 in international format.
The telephone area code for Mbarara, Uganda, is 0485, or +256 485 in international format.
The telephone area code for Mityana, Uganda, is 046, or +256 46 in international format.
The telephone area code for Soroti, Uganda, is 045, or +256 45 in international format.
The telephone area code for Tororo, Uganda, is 045, or +256 45 in international format.
The telephone area code for Arua, Uganda, is 0476, or +256 476 in international format.