Area code +1 613 and overlay code +1 343 serve Ottawa, Ontario, Canada, and surrounding areas.
The Quebec side of the National Capital Region uses area codes +1 819 and +1 873.
(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 manycountries use different prefixes.)
Telephone country code +40 is Romania, and a number beginning with +40 343 is probably in Ialomita. Calling from North America (USA, Canada, etc.), the number would be dialed beginning with 011-40-343-etc. (011 is the international dialing prefix for outbound calls from North America). The other possibility is that 011 is a domestic area code or part of one. For example, in the UK, 0114 is the area code for Sheffield, and there are some "national dialling only" numbers that begin with 0114 0. In South Africa, 011 is one of the area codes for Johannesburg.
Area code 343 has been assigned in Canada, to overlay the 613 area code in Eastern Ontario. This area includes Ottawa
The country code and area code of Siteki, Swaziland is 268, 343.
The country code and area code of Marijampole, Lithuania is 370, (0)343.
The country code and area code of Ejutla, Mexico is 52, (01)343.
The country code and area code of Doorn, Netherlands is 31, (0)343.
The country code and area code of Ailandi, Turkmenistan is 993, (8)343.
North American (USA, Canada, etc.) area code +1 343 is Ottawa, Ontario, Canada. Area code +1 791 does not exist. The 343-791 prefix also does not exist.Country code +34 is Spain, but there are no numbers beginning with +34 3. Country code +7 is Russia and Kazakhstan, and +7 91 is a Russian mobile 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, and many other countries use different prefixes.)
The country code and area code of Durgapur- Asansol, India is 91, (0)343.
The country code and area code of Ekaterinburg region, Russian Federation is 7, (8)343.
The telephone country code for Argentina is +54. The area code for Parana is 0343, or +54 343 in international format.
Area code 613 (and overlay area code 343) is Ottawa, Ontario, Canada, and nearby areas. The 613-909 prefix is in Ottawa.