00 = commonly used international access prefix
+1 = telephone country code for North America (USA, Canada, etc.)
403 = area code for Calgary, Alberta, Canada
or,001 = international access prefix+40 = telephone country code for Romania
3 = operator code for competing telephone companies
It is much less confusing to quote an international telephone number beginning with the plus symbol and country code, omitting any access prefix, since the prefix varies from country to country.
(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.)
The dialing code for Barbados is 246
The Australian country code when dialing from the USA is 61.
As is, it would appear that '947' is an international dialing code. That would be the international dialing code for Qatar.
To where...?!!
For dialing a telephone number outside your local area.
Dominica.
Warwick.
The dialing code +973 is for Bahrain. This country code is used when making international calls to Bahrain from abroad. When dialing, you would start with the international dialing prefix, followed by 973 and then the local number.
Country code +358 is Finland.
Russia's dialing code is: 7
The country with the dialing code +384 is Kosovo. This code is used for making international calls to Kosovo from other countries. Kosovo declared independence from Serbia in 2008 and has since established its own telecommunications system, including its dialing code.
The dialing code 00601 is not associated with London or the UK. In fact, it is likely a non-standard or fictional code, as UK dialing codes typically begin with 0 followed by a 2-5 digit area code. For London, the area codes start with 020. If you're looking for specific dialing codes in London, the standard code is 020.