The country code 1 is assigned to the United States and its territories.
Understanding Country Codes
Country codes are short alphabetic or numeric geographical codes developed to represent countries and dependent areas, for use in data processing and communications. When making international calls, these codes are essential as they route the call to the correct country.
Country Code 1: North American Numbering Plan (NANP)
The country code "1" is part of the North American Numbering Plan (NANP), which includes the United States and its territories, Canada, and several Caribbean nations. However, based on the reference provided, we will focus on the United States and its territories.
United States and Territories with Country Code 1
The United States and several of its territories use the country code 1. Here is a detailed breakdown:
United States
The United States uses the country code 1 for all its states. When calling any number within the U.S., you would use the country code 1 followed by the area code and local number.
U.S. Territories
Several U.S. territories also use the country code 1. These include:
- United States Virgin Islands: The U.S. Virgin Islands uses the country code 1 followed by the area code 340.
- Northern Mariana Islands: The Northern Mariana Islands uses the country code 1 followed by the area code 670.
- Guam: Guam uses the country code 1 followed by the area code 671.
Summary Table
| Country/Territory | Country Code | Area Code |
|---|---|---|
| United States | 1 | Varies |
| United States Virgin Islands | 1 | 340 |
| Northern Mariana Islands | 1 | 670 |
| Guam | 1 | 671 |
Practical Usage
When making an international call to any of these regions, you need to dial the international access code (e.g., 011 from the U.S.), followed by the country code (1), the area code, and finally the local number.
Example
To call a number in Guam, you would dial:
- 011 (International Access Code)
- 1 (Country Code)
- 671 (Area Code for Guam)
- [Local Number]
Conclusion
The country code 1 is designated for the United States and its territories, including the U.S. Virgin Islands, the Northern Mariana Islands, and Guam. Understanding these codes helps ensure your international calls are routed correctly.
