Seven-digit dialing is a telephone dialing procedure customary in some territories of the North American Numbering Plan (NANP) for dialing telephone numbers...
13 KB (2,000 words) - 18:09, 11 February 2024
Ten-digit dialing is a telephone dialing procedure in the countries and territories that are members of the North American Numbering Plan (NANP). It is...
10 KB (1,306 words) - 08:14, 8 May 2024
Area code 940 (section Ten-digit dialing)
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
5 KB (289 words) - 22:42, 28 May 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (218 words) - 22:36, 28 May 2024
Area code 409 (section Ten-digit dialing)
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
5 KB (341 words) - 22:38, 28 May 2024
the largest cities where seven-digit dialing was still possible. The installation of a second area code broke seven-digit dialing for calls within the District...
9 KB (1,090 words) - 16:55, 8 March 2024
Area code 915 (section Ten-digit dialing)
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (332 words) - 22:41, 28 May 2024
Area code 361 (section Ten-digit dialing)
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
6 KB (328 words) - 22:38, 28 May 2024
mandatory dialing begins, when seven-digit dialing is no longer permissible. Atlanta was the first U.S. city to require mandatory ten-digit dialing throughout...
71 KB (8,732 words) - 04:44, 7 June 2024
Area codes 608 and 353 (section Ten-digit dialing)
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
5 KB (431 words) - 06:22, 27 September 2023
code protection that maintained seven-digit dialing in the metro-area. Assignment of these prefixes would require dialing an area code. The three local...
14 KB (1,399 words) - 16:52, 8 March 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (378 words) - 18:10, 27 August 2022
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
2 KB (258 words) - 20:07, 18 January 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (260 words) - 21:13, 12 June 2024
Area code 603 (section Ten-digit dialing)
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
80 KB (302 words) - 15:49, 17 December 2023
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
4 KB (317 words) - 17:45, 21 May 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (324 words) - 21:31, 15 January 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (269 words) - 13:59, 30 March 2024
codes of 988 that still permitted seven-digit dialing, requiring all such NPAs to transition to ten-digit dialing. On November 28, 2022, the 209 numbering...
12 KB (640 words) - 16:11, 8 May 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (229 words) - 19:50, 14 June 2023
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (260 words) - 03:27, 20 May 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
4 KB (278 words) - 21:31, 15 January 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (353 words) - 00:05, 20 May 2024
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
8 KB (421 words) - 22:40, 28 May 2024
Area codes 703 and 571 (section Dialing requirements)
571, 10-digit dialing is mandatory even for local calls; cellphone callers do the same on all direct-dialed calls. Long-distance calls are dialed as eleven...
11 KB (1,060 words) - 03:54, 14 March 2023
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (229 words) - 00:02, 20 May 2024
as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that still permitted seven-digit dialing. This...
2 KB (190 words) - 21:16, 21 November 2022
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
5 KB (350 words) - 14:19, 2 August 2023
nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area...
3 KB (254 words) - 00:18, 26 December 2021
three-digit dialing code for the National Suicide Prevention Lifeline. This created a conflict for Hawaii's exchanges, all of which permitted seven-digit dialing...
4 KB (348 words) - 15:01, 24 February 2024