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8 hours ago · 257, 357, 457, 621, 679, 729, 748, 837, 942. ^ The year may designate either the time of assignment or the in-service date. In-service dates are often difficult to ascertain for the early codes before they gained public recognition with gradual implementation of Direct Distance Dialing in the 1950 and 1960s.
- North American Numbering Plan Expansion
The expansion of the North American Numbering Plan (NANP) is...
- NANP
In 1993, the North American Numbering Plan designated area...
- North American Numbering Plan Expansion
5 days ago · The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes), consisting of three digits that are prefixed to each local telephone number with seven digits.
8 hours ago · Officially, all calls to US numbers begin with the “+1” code because it is the region code for North America and the Caribbean. This region is covered by the North American Numbering Plan (NANP). The +1 code represents the collective countries within this plan, including the United States, Canada, Bermuda, and several Caribbean nations.
1 day ago · Understanding the Landscape: North American Calling Simplified. Fortunately, placing calls from the US to Canada is relatively straightforward due to the North American Numbering Plan (NANP). Established in 1984, the NANP creates a unified numbering system for the US, Canada, and some Caribbean territories. This means:
1 day ago · In the numbering scheme for the primary routes, east–west highways are assigned even numbers and north–south highways are assigned odd numbers. Odd route numbers increase from west to east, and even-numbered routes increase from south to north (to avoid confusion with the US Highways , which increase from east to west and north to south). [56]
- June 29, 1956; 67 years ago
- 48,756 mi (78,465 km)
- Interstate X (I-X)
3 days ago · 1 - North American long distance prefix. area code - 3 digit area codes. local phone number - 7 digits. Canada to USA dialing format: 1 XXX ??? ???? this country is in the North American Numbering Plan (calling it works like a Canadian long distance call)...however, international charges may apply when calling US numbers!
2 days ago · North America Area Codes. Home. Area Code. Mar 22, 2024. Area Code Listing & Area Code Lookup. The complete list of all valid area codes in North America, including Canada — Updated Daily! Phone number lookup. Phone Lookup. Enter the complete 10-digit phone number. Area codes by state: Alabama. Alaska. Arizona. Arkansas. California. Colorado.