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class="vector-toc-numb">2</span> <span>Code exhaustion relief</span> </div> </a> <button aria-controls="toc-Code_exhaustion_relief-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Code exhaustion relief subsection</span> </button> <ul id="toc-Code_exhaustion_relief-sublist" class="vector-toc-list"> <li id="toc-Area_code_split" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Area_code_split"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Area code split</span> </div> </a> <ul id="toc-Area_code_split-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Area_code_overlay" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Area_code_overlay"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Area code overlay</span> </div> </a> <ul id="toc-Area_code_overlay-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-1+10_dialing" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#1+10_dialing"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>1+10 dialing</span> </div> </a> <ul id="toc-1+10_dialing-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ten-digit_dialing_in_non-overlay_areas" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ten-digit_dialing_in_non-overlay_areas"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Ten-digit dialing in non-overlay areas</span> </div> </a> <ul id="toc-Ten-digit_dialing_in_non-overlay_areas-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> 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0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Ten-digit_dialing" title="Special:EditPage/Ten-digit dialing">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Ten-digit+dialing%22">"Ten-digit dialing"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Ten-digit+dialing%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Ten-digit+dialing%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Ten-digit+dialing%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Ten-digit+dialing%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Ten-digit+dialing%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">December 2009</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p> <b>Ten-digit dialing</b> is a telephone dialing procedure in the countries and territories that are members of the <a href="/wiki/North_American_Numbering_Plan" title="North American Numbering Plan">North American Numbering Plan</a> (NANP). It is the practice of including the <a href="/wiki/Area_code" class="mw-redirect" title="Area code">area code</a> of a <a href="/wiki/Telephone_number" title="Telephone number">telephone number</a> when <a href="/wiki/Dialling_(telephony)" title="Dialling (telephony)">dialing</a> to initiate a <a href="/wiki/Telephone_call" title="Telephone call">telephone call</a>. When necessary, the ten-digit number may be prefixed with the trunk code <i>1</i>, which is referred to as <i>1+10-digit dialing</i> or <i>national format</i>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The implementation and expansion of the North American Numbering Plan between 1947 and 1992 preserved a long-standing practice in the United States and Canada that callers should only need to dial the local seven-digit telephone number when placing a call within the caller's exchange area or within the home numbering plan area (NPA). In <a href="/wiki/Seven-digit_dialing" title="Seven-digit dialing">seven-digit dialing</a>, callers dial the three-digit central office code and the four-digit station number of the destination telephone if it resides in the same numbering plan area. Dialing of an area code before the telephone number, referred to as ten-digit dialing, was only necessary for <i>foreign NPA</i> (FNPA) calls. </p><p>Some communities with significant parts on both sides of an area code boundary implemented <a href="/wiki/Central_office_code_protection" title="Central office code protection">central office code protection</a>, where possible, to ensure the same seven-digit local number was not assigned in two different area codes in the same city to assure seven-digit dialing in the entire community. </p> <div class="mw-heading mw-heading2"><h2 id="Code_exhaustion_relief">Code exhaustion relief</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=2" title="Edit section: Code exhaustion relief"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When the demand for telecommunication services in a numbering plan area threatens to exceed the capacity of telephone numbers of a single area code, the local public service agency and the Federal Communications Commission initiate relief measures to mitigate the exhaustion, and assure continued service with minimal customer impact in the affected areas. </p> <div class="mw-heading mw-heading3"><h3 id="Area_code_split">Area code split</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=3" title="Edit section: Area code split"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In an <a href="/wiki/Area_code_split" title="Area code split">area code split</a>, the established practice of relief from 1947 to 1992, the affected numbering plan area is divided into suitable parts, most often two, and assigned a new area code to one of the areas, while maintaining the existing area code in the other. The area that retained the code was most commonly the denser-populated or geographically or historically more significant part. This freed the telephone numbers already issued in the new area for use in the existing, now smaller, numbering plan area. This practice preserved seven-digit dialing in all affected areas. </p> <div class="mw-heading mw-heading3"><h3 id="Area_code_overlay">Area code overlay</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=4" title="Edit section: Area code overlay"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>By 1992, a new method of relief became available from the proliferation of <a href="/wiki/Electronic_switching_system" title="Electronic switching system">electronic switching systems</a> that were based on <a href="/wiki/Stored_program_control" title="Stored program control">stored program control</a> (SPC), which reduced the need for electromechanical extensions of the switching fabric. This made it possible to assign multiple area codes to a single numbering plan area. An <a href="/wiki/Area_code_overlay" class="mw-redirect" title="Area code overlay">area code overlay</a> required additional technology in all affected switching systems to recognize the local area codes and select the appropriate routing for local calls, even within the wire center. This eliminated the possibility of maintaining seven-digit dialing, and required the dialing of ten digits for all calls. </p><p>Consumer groups and some state regulators, such as the Illinois Commerce Commission and Citizens Utility Board for northwest Chicago, and the NYS Public Service Commission in NYC, opposed the requirement with attempts at litigation.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>The added effort in remembering and dialing longer numbers damaged the popularity of <a href="/wiki/Overlay_plan" class="mw-redirect" title="Overlay plan">overlay plans</a>,<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (November 2021)">citation needed</span></a></i>]</sup> which were introduced as a means to reduce the inconveniences associated with the traditional method of splitting an area. However, overlay plans have become the primary relief method and ten-digit dialing has become increasingly common in the U.S. and Canada. </p> <div class="mw-heading mw-heading2"><h2 id="1+10_dialing"><span id="1.2B10_dialing"></span>1+10 dialing</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=5" title="Edit section: 1+10 dialing"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Long-distance calls within a numbering plan area may also require dialing of an extra digit. Eleven digits for toll calls became standard in all of North America by the end of 1994 to allow introduction of "<a href="/wiki/Interchangeable_NPA_codes" class="mw-redirect" title="Interchangeable NPA codes">interchangeable NPA codes</a>"—area codes that did not have a 0 or 1 as the middle digit and could therefore be confused with the central office code—after January 1, 1995. </p><p>Dialing <i>1</i> before the area code is most often required only for long-distance calls. Some telephone systems in early overlay areas do not accept a "1" before the area code for local calls; all Canadian landlines follow this pattern. However, in metropolitan <a href="/wiki/New_York_City" title="New York City">New York City</a> and <a href="/wiki/Chicago" title="Chicago">Chicago</a>, as well as the entire state of <a href="/wiki/California" title="California">California</a>, the initial "1" is required even for local calls for landline phones located within an overlay complex or with a single NPA that also serves customers with a 988 NXX (see below). All cellphones in North America ignore this and only require the user to dial ten digits.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Ten-digit_dialing_in_non-overlay_areas">Ten-digit dialing in non-overlay areas</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=6" title="Edit section: Ten-digit dialing in non-overlay areas"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A few area codes not part of any overlay complex nonetheless require ten-digit dialing if part of the local calling area is within an overlay complex. For example, the <a href="/wiki/Fort_Knox" title="Fort Knox">Fort Knox</a> <a href="/wiki/United_States_Army" title="United States Army">Army</a> base in <a href="/wiki/Kentucky" title="Kentucky">Kentucky</a> is served by <a href="/wiki/Area_code_502" title="Area code 502">area code 502</a>, but its local calling area includes cities that are served by the <a href="/wiki/Area_codes_270_and_364" title="Area codes 270 and 364">270/364 overlay complex</a>. As a result, Fort Knox imposed ten-digit dialing for all off-base numbers when the 270/364 overlay was established in 2014.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Area_Codes_US_10D_changing_L48.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Area_Codes_US_10D_changing_L48.svg/400px-Area_Codes_US_10D_changing_L48.svg.png" decoding="async" width="400" height="206" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Area_Codes_US_10D_changing_L48.svg/600px-Area_Codes_US_10D_changing_L48.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Area_Codes_US_10D_changing_L48.svg/800px-Area_Codes_US_10D_changing_L48.svg.png 2x" data-file-width="512" data-file-height="264" /></a><figcaption>Area codes (in blue) affected in the lower 48 states. </figcaption></figure> <p>A July 2020 order by the <a href="/wiki/Federal_Communications_Commission" title="Federal Communications Commission">Federal Communications Commission</a> required ten-digit dialing of telephone numbers with area codes in the United States that were not overlaid, but had an assignment of the central office prefix <i>988</i>, conflicting with its designation for the <a href="/wiki/National_Suicide_Prevention_Lifeline" class="mw-redirect" title="National Suicide Prevention Lifeline">National Suicide Prevention Lifeline</a> by federal law.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>NANPA Planning Letter 544 cites 83 area codes affected in 37 states. Three additional area codes were already transitioning to ten-digit dialing as the result of overlay implementations. Central office code 988 was in the process of discontinuation for <a href="/wiki/Area_code_904" class="mw-redirect" title="Area code 904">area code 904</a>.<sup id="cite_ref-pl544_7-0" class="reference"><a href="#cite_note-pl544-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> While included in the list of 83 area codes, <a href="/wiki/Area_code_701" title="Area code 701">area code 701</a> in North Dakota will not be converted to ten-digit dialing because the 32 telephone numbers in the 988 central office were reassigned to another prefix.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Several of these codes have subsequently been converted to overlay complexes and the implementation of such complexes could be expedited as the transition to ten-digit dialing was not necessary. </p><p>As part of Canada's implementation of a national 9-8-8 hotline, the <a href="/wiki/Canadian_Radio-television_and_Telecommunications_Commission" title="Canadian Radio-television and Telecommunications Commission">Canadian Radio-television and Telecommunications Commission</a> (CRTC) announced in August 2022 that all remaining Canadian non-overlay areas with seven-digit dialing, most of which use "988" as a central office code under their respective area codes, were required to convert to ten-digit dialing by May 31, 2023. A partial exception existed for the three northern territories served by <a href="/wiki/Area_code_867" title="Area code 867">area code 867</a>, which was not projected to exhaust until at least 2043; only the <a href="/wiki/Yellowknife" title="Yellowknife">Yellowknife</a> area (which contains the 988 exchange) was required to convert, with seven-digit dialing remaining optional elsewhere in the region due in part to unique geographical and cultural considerations.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=7" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/List_of_country_calling_codes" title="List of country calling codes">List of country calling codes</a></li> <li><a href="/wiki/Telephone_numbering_plan" title="Telephone numbering plan">Telephone numbering plan</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=8" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" 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North Dakota Public Services Commission<span class="reference-accessdate">. Retrieved <span class="nowrap">December 22,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Re%3A+Implementation+of+the+National+Suicide+Hotline+Improvement+Act+of+2018&rft.date=2020-12-18&rft.aulast=Schock&rft.aufirst=Victor&rft_id=https%3A%2F%2Fecfsapi.fcc.gov%2Ffile%2F1218227524725%2FNDPSC%2520communication.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATen-digit+dialing" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCanadian_Radio-television_and_Telecommunications_Commission2022" class="citation web cs1"><a href="/wiki/Canadian_Radio-television_and_Telecommunications_Commission" title="Canadian Radio-television and Telecommunications Commission">Canadian Radio-television and Telecommunications Commission</a> (August 31, 2022). <a rel="nofollow" class="external text" href="https://crtc.gc.ca/eng/archive/2022/2022-234.htm">"Telecom Regulatory Policy CRTC 2022-234: Introduction of 9-8-8 as the three-digit abbreviated dialing code for mental health crisis and suicide prevention services and Northwestel Inc.'s application for modified implementation of ten-digit local dialing"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">September 6,</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Telecom+Regulatory+Policy+CRTC+2022-234%3A+Introduction+of+9-8-8+as+the+three-digit+abbreviated+dialing+code+for+mental+health+crisis+and+suicide+prevention+services+and+Northwestel+Inc.%27s+application+for+modified+implementation+of+ten-digit+local+dialing&rft.date=2022-08-31&rft.au=Canadian+Radio-television+and+Telecommunications+Commission&rft_id=https%3A%2F%2Fcrtc.gc.ca%2Feng%2Farchive%2F2022%2F2022-234.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATen-digit+dialing" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ten-digit_dialing&action=edit&section=9" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.nationalnanpa.com/enas/npasRequiring10DigitReport.do">NANPA report of NPAs requiring ten-digit dialing</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Ten-digit_dialing&oldid=1255309537">https://en.wikipedia.org/w/index.php?title=Ten-digit_dialing&oldid=1255309537</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Category</a>: <ul><li><a href="/wiki/Category:North_American_Numbering_Plan" title="Category:North American Numbering Plan">North American Numbering Plan</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Articles_needing_additional_references_from_December_2009" title="Category:Articles needing additional references from December 2009">Articles needing additional references from December 2009</a></li><li><a href="/wiki/Category:All_articles_needing_additional_references" title="Category:All articles needing additional references">All articles needing additional references</a></li><li><a href="/wiki/Category:Use_mdy_dates_from_November_2024" title="Category:Use mdy dates from November 2024">Use mdy dates from November 2024</a></li><li><a href="/wiki/Category:All_articles_with_unsourced_statements" title="Category:All articles with unsourced statements">All articles with unsourced statements</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_November_2021" title="Category:Articles with unsourced statements from November 2021">Articles with unsourced statements from November 2021</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 4 November 2024, at 07:15<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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