It is not clear what you mean by "national phone code." The telephone country code for France is +33.
The country that uses the 0844 phone number as its code is the United Kingdom. This code provides phone services to businesses within the United Kingdom.
221 is the country code for Senegal.
221 is the international dialling code for the country of Senegal.
There is not country codes for phone numbers inside the USA. Country code 90 is from Turkey.
+52 is the country code for Mexico.
In what country?
The country code 852 from phone number 852-942-3322, is Hong Kong.
You can get country code for your Nokia 6300 mobile phone from Mobileunlockguide.com at reasonable price.Here they ask you to specify the country name,current network provider and IMEI number of your mobile phone.
Country code +870 is for Inmarsat, a satellite phone system used primarily for ship-to-shore calls.
+44 is the country code for the United Kingdom +44 77 is a mobile phone.
A satellite phone is usually issued with its own country code. You simply need to have international calling available on your mobile and dial the country code for the sat phone and then the number as normal. Sat phone country codes are in the range +870 through +874.