Southwestern Missouri is in area code +1 417, including Springfield, Joplin, Branson, Alton, Hermitage, Houston, Lebanon, Neosho, Nevada, and West Plains.
(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 many countries use different prefixes. Within North America [USA, Canada, etc.], dial 1 plus area code 417.)
Missouri City is in area code 281, with overlay code 832. There may also be some Missouri City numbers in area code 713.
Southwestern Pennsylvania... generally, the Pittsburgh area.
North American telephone area code +1 417 serves southwestern Missouri, including Joplin, Branson, and Ozark.(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 Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
Diamond, MO, is in area code 417.
Branson, MO, is in area code 417.
The telephone country code for France is +33. The area code for the southwestern part of the country is 05, or +33 5 in international format. The local number is a further 8 digits.
Southwestern Alabama
Area code 573 was created in 1996, as a split from area code 314.
Blue Eye, Missouri, is in area code 417.
Area code 203 is in southwestern Connecticut (including New Haven, Bridgeport, and the suburbs of New York City). Area code 475 is an overlay on 203.
Area code 337 is the southwestern part of Louisiana, including Lafayette and Lake Charles. It covers hundreds of different ZIP Codes.
816