NANPA recently added Planning Letter 395 to its site, outlining the 579 NPA overlay for Quebec area code 450. The Canadian Radio-television and Telecommunications Commission (CRTC) designated a relief date of 8/21/10 for implementation of this distributed overlay. The service area for NPA 450 (and new 579) includes Quebec communities of Joliette, Granby, St-Hyacinthe, St-Jérôme, St-Lambert, Longueuil, Valleyfield, Ste-Thérèse, Sorel, Boucherville, Chomedey, St-Jean, Pont-Viau, and Laval-Ouest.
No dialing plan changes will occur when the new 579 NPA is implemented. The dialing plan was outlined in the 395 Planning Letter as: "all local calls including Extended Area Service calls will be dialed with 10 digits; toll and alternatively billed calls will be dialed with 10 digits after the appropriate prefix digit(s)".
In preparation for the 8/21/10 579 NPA activation:
~ 2/21/10 is set as the date service providers may begin assigning NXX Codes within the 579 NPA
~ 6/19/10 will be the start of network testing, by which time all international and domestic service providers should have ensured the new 579 NPA is activated system wide
For a list of test numbers or more information regarding the new 579 NPA overlay, visit http://www.nanpa.com.
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