The United States is in telephone country code +1 (along with Canada and certain Caribbean-ish islands). The international access prefix for outbound calls from Nepal is 00.
Thus, to call from Nepal to the US, on a mobile phone, just enter the number in full international format, beginning with the plus symbol; for example, +1 212 555 0123. From a landline phone, dial 00 1 instead of +1.
(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 out of the US, first dial the international access code (usually 011), then the country code of the country you are calling, followed by the area code and phone number.
To dial out of the US, first dial the international access code (usually 011), then the country code of the country you are calling, followed by the area code and phone number.
To dial from the US to Australia, you need to first dial the international dialing code, which is 011. Then, dial the country code for Australia, which is 61. Finally, dial the area code and phone number you wish to reach in Australia.
To dial China from the US, first dial the international access code (011), then the country code for China (86), followed by the area code and phone number.
To dial China from the US, first dial the international access code (011), then the country code for China (86), followed by the area code and phone number.
To dial out to Australia from the US, you need to first dial the international dialing code "011" followed by the country code for Australia which is "61." Then, dial the area code and phone number you wish to reach in Australia.
To dial outside the US, first dial the international access code (usually "011" in the US), then the country code of the country you are calling, followed by the local phone number.
To dial Australia from the US, you need to first dial the international dialing code "011" followed by the country code for Australia, which is "61." Then, dial the Australian phone number you wish to reach, including the area code.
Dial the International Access Code (011 from the US; something else from most other countries). Dial the UK Country Code (44). Dial the UK Area Code (WITHOUT the initial zero) Dial the UK Local Number.
To dial Australia from a US cell phone, you need to first dial the international dialing code, which is 011. Then, dial the country code for Australia, which is 61. Finally, dial the Australian phone number you wish to reach, including the area code.
To dial Singapore from the US, first dial the international access code (011), then the country code for Singapore (65), followed by the local phone number in Singapore.
To dial an Australian number from the US, you need to first dial the international dialing code "011" followed by the country code for Australia which is "61". Then, dial the Australian phone number you wish to reach, including the area code.