What is the telephone area code for Dakar Senegal?

The telephone country code for Senegal is +221. All telephone numbers in Senegal are 9 digits, with no area code as such. Landline numbers begin with 3, and mobile phone numbers begin with 7.

(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)