Dial your International Access Code - 00
Dial the UK Country Code - 33
Dial the Area Code.
Dial the eight digit local number.
If the area code is shown with a leading zero, you must not dial the zero.
+33 is the code for France, followed by the subscribers number without the leading '0'. (For example, Paris numbers begin with +33 1, not with +33 01.)
(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.)
To dial an international call from France, dial 00, followed by the telephone country code, city code, and subscriber number.
If you are calling on a GSM mobile phone, you can just dial the telephone country code (including the plus symbol), the city code, and subscriber number.
(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.)
You dial a fax number on a fax machine exactly the same way you would dial the same number on a landline telephone. In the case of calling from France to the UK, you replace the trunk prefix 0 of the UK domestic number with the international access prefix 00 and country code 44. For example, to fax London, dial 00 44 20 and then the 8-digit local number in London.
You dial a fax number on a fax machine exactly the same way you would dial the same telephone number from an ordinary landline telephone at the same location. To send a fax from the UK to France, dial 00 33 and then the French number, omitting the trunk prefix 0. (For example, Paris's area code 01 becomes 00 33 1, followed by 8 more digits.)
+44 20, which is dialed as 00 44 20 from a landline in France (or most places in Europe and many places around the world). On a mobile phone, just use +44 20, including the plus symbol.
The telephone country code for France is +33. The area code for the southeastern quadrant of the country, including the island of Corsica, is 04, or +33 4 in international format.
The telephone country code for France is +33. The area code for the northeastern quadrant of the country is 03, or +33 3 in international format. The local number is a further 8 digits.
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.
The country code for France is +33. Paris is in area code +33 1, or 01 within France.
The telephone country code for France is +33. The area code for Corsica is 04, or +33 4 in international format. The local number is a further 8 digits.
The telephone country code for France is +33. The area code for Aquitaine is 05, or +33 5 in international format. The local number is a further 8 digits.
The telephone country code for France is +33. The area code for Bretagne is 02, or +33 2 in international format. The local number is a further 8 digits.
The telephone country code for France is +33. The area code for Picardie is 03, or +33 3 in international format. The local number is a further 8 digits.
The telephone country code for France is +33. The area code for Limousin is 05, or +33 5 in international format. The local number is a further 8 digits.
The telephone country code for France is +33. The area code for Bourgogne is 03, or +33 3 in international format. The local number is a further 8 digits.
The telephone country code for France is +33. When calling from outside France, you must drop the leading '0' from the French number.
It is not clear what you mean by "national phone code." The telephone country code for France is +33.