Calling France from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 33 - Country Code for France
• Phone Number (may not begin with 0) - 9 digits
• US to France international dialing format: 011 33 ? ?? ?? ?? ??

How to dial to France cellular:

• dialing format for calls to a cell phone: 011 33 6 ?? ?? ?? ?? (or 7 ?? ?? ?? ??)

First digit(s) for landline numbers:

• Paris: 1
• Brest, Cherbourg, Le Havre, Nantes, Orleans, Rouen: 2
• Boulogne, Calais, Dijon, Lille, Nancy, Strasbourg, Reims, Troyes: 3
• Cannes, Grenoble, Lyon, Marseille, Nice, St. Etienne, Toulon, Valence: 4
• Bordeaux, Limoges, Lourdes, Toulouse: 5
• Corsica: 495
• Voice over IP non geographic numbers: 9

Phone Books:

• Pages Jaunes and Pages Blanches - official Yellow and White Pages respectively, in French
• Infobel France - business and people search