00 is the international access prefix for outbound calls from the UK, and +1 is the telephone country code for North America (including USA, Canada, Bermuda, and various Caribbean-ish islands), so 00 1 is the dialing code for North America from the UK.
(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.)
011 is the outbound international calling prefix from any country in the NANP. NANP stands for North American Numbering Plan. Countries included in the NANP are the United States and its territories, Canada, Bermuda, Anguilla, Antigua & Barbuda, the Bahamas, Barbados, the British Virgin Islands, the Cayman Islands, Dominica, the Dominican Republic, Grenada, Jamaica, Montserrat, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Trinidad and Tobago, Turks & Caicos, and the Dutch side of the island of Sint Maarten.
So to answer your question directly, many countries have the calling code 011.
There are two ways to interpret your question.
If you are outside the United States, trying to make a call to the U.S., then 001 may or may not be the correct dialing prefix. The telephone country code for the United States is +1, followed by a 3-digit area code and a 7-digit subscriber number. If you are calling on a mobile phone, you can enter the number in full international format, beginning with the plus symbol; for example, +1 312 555 0123. If your mobile phone does not allow you to enter a plus symbol in a telephone number, or if you are calling on a landline phone, substitute your international access prefix for the plus symbol. The international access prefix is determined by your location, not the person you are trying to call. The most commonly used prefix is 00, but many countries use other prefixes.
If you are in the United States, trying to make an international call, the international access prefix is 011. If you are calling on a mobile phone (cell phone), try entering the number in international format, beginning with the plus symbol and the telephone country code (one, two, or three digits, never beginning with zero); for example, +44 20 7496 0123. If that doesn't work, or if you are on a landline, substitute 011 for the plus symbol.
If you are making a call within the North American Numbering Plan, which is to say within the United States, Canada, and 18 assorted island countries and territories in or near the Caribbean, then you just need to dial 1 plus the area code and the number, although dialing +1 on a mobile phone will also work. This is true for calls from the US to Canada or the islands, or from any of those places to the US. Although the call is dialed the same way as a domestic long distance call, international rates will still apply.
(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.)
That is not a valid dialling code anywhere on earth.
International country code for South Korea is +82. Replace + with 011 if calling from US/Canada Replace + with 00 if calling from Europe.
Nigeria
dial 011 then the number. 011 is the number for international calling.
The area of Kolle, also known as Kolo, in Kosovo does not have an area code for itself, but it is in the Kosovska Mitrovica District. Mitrovica's area code is 28. If you are internationally calling, you will need your country's international calling code and Uganda's country code, which is 383. For example, if you are calling from the United States or Canada to Kolo, the phone number would begin with 011 383 28 and then the rest of the phone number. The international calling code from the United States/Canada is 011, Kosovo's country code is 383, Mitrovica's area code is 28, and then followed by the phone number.
The area of Katareza, Rwampara, Uganda does not have an area code for itself, but it is very close to Mbarara. Mbarara's area code is 485.If you are calling within Uganda, then add a 0 before the number. If you are internationally calling, you will need your country's international calling code and Uganda's country code, which is 256.For example, if you are calling from the United States or Canada to Rujumbura, the phone number would be 011 256 485 ??? ???.The international calling code from the United States/Canada is 011, Uganda's country code is 256, Mbarara's area code is 485, and the ??? ??? is the specific phone number.
To call Surrey from the US, you would need to dial the international dialing code 011, followed by the country code for Canada, which is 1, and then the area code for Surrey, which is 604 or 778. Finally, dial the specific phone number you are trying to reach in Surrey.
'011' is not part of the country code, it is the international access prefix for international calls from North America (USA, Canada, and certain Caribbean islands). Country code +47 is Norway.
The area of Rujumbura, Uganda does not have an area code for itself, but it is in the Rukungiri area and close to Kabale.Kabale's area code is 486. Rukungiri's extension is 242.If you are calling within Uganda, then add a 0 before the number. If you are internationally calling, you will need your country's international calling code and Uganda's country code, which is 256.For example, if you are calling from the United States or Canada to Rujumbura, the phone number would be 011 256 486 242 ???.The international calling code from the United States/Canada is 011, Uganda's country code is 256, Kabale's area code is 486, Rukungiri's extension is 242, and the ??? is the specific phone number.
The small county or Rushenyi, Uganda does not have an area code for itself, but it is quite close in proximity to the city of Kabale - within one hour drive. Kabale's area code is (0)486. If you are internationally calling, you will also need Uganda's country code which is 256 and your country's international calling code. For example, if you are calling from the United States or Canada, the phone number would be 011 256 486 ??? ???. The international calling code from the United States/Canada is 011, Uganda's country code is 256, Kabale's area code is 486 and the ??? ??? is the specific phone number.
011 is the international calling code from North America. 44 is the country code for the United Kindom. 20 (or 020 when dialling within the UK) is the area code for London. So, a number like 011 44 20 3890 1234 would be a telephone number in London, UK.
011 isn't part of the country code, it is the international access prefix for outbound international calls from North America (USA, Canada, etc.). Country code +44 is the United Kingdom. However, there are no valid numbers beginning with +44 25.Conclusion: invalid code
The International Dialing Code for Italy is 39. There may be an additional code for the city or area for which you're calling. Depending on your long distance carrier, generally the procedure to call internationally is 011 (International Long Distance) 39 (for Italy, or whatever country code you're calling) city or area code you're calling telephone number