Number: PL- 530 Date: August 20, 2019 From: Canadian Numbering Administrator (CNA) Subject: NPA 474 to Overlay NPA 306/639 (Saskatchewan, Canada) Related Previous Planning Letter: N/A ______

In Telecom Decision CRTC 2019-129, dated 3 May 2019, the Canadian Radio-television and Telecommunications Commission (CRTC) directed that relief for the Saskatchewan area code 306/639 complex be provided through a distributed overlay using new area code 474 effective 2 October 2021.

The new area code 474 has been assigned by the North American Numbering Plan Administrator (NANPA) and will be implemented on the Relief Date of 2 October 2021 as a distributed overlay over the geographic area of the province of Saskatchewan, currently served by the NPA 306/639 complex.

The area code 306/639 complex consists of 228 Exchange Areas, which include the major communities of Assiniboia, Esterhazy, Estevan, Humboldt, Kindersley, Maple Creek, Melfort, Melville, Moose Jaw, Moosomin, Nipawin, North Battleford, Outlook, Prince Albert, Regina, Rosetown, Saskatoon, Swift Current, Weyburn and Yorkton.

A map showing the location of the area served by the NPA 306/639 complex, and a list of the 228 Exchange Areas are attached to this letter.

When the new NPA 474 is introduced, no changes will take place in the dialling plans in the area that is served by the NPA 306/639 complex and that will be served by NPA 474. The dialling plan in this area will continue to be:

- All local calls, including Extended Area Service calls, originating within the overlay area and neighbouring NPAs must be dialled with 10 digits; i.e., NPA-NXX-XXXX. - Toll and alternatively billed calls originating within the overlay area will continue to be dialled with 10 digits after the appropriate prefix digit(s).

All international and domestic Telecommunications Service Providers (TSPs) should ensure that the new NPA 474 is activated throughout their networks by 2 July 2021 which is the start date for network testing.

The following test numbers for the new NPA 474 will be made available effective 2 July 2021. Routing of calls to area code 474 can be verified by dialing the 8378 (TEST) numbers which do not provide answer supervision. Billing of calls to area code 474 can be verified by dialing the 2455 (BILL) numbers which provide answer supervision.

Test Number Exchange Area Carrier (Rate Center) 474-210-8378 and -2455 Regina SaskTel Mobility 474-410-8378 and -2455 Saskatoon SaskTel Mobility 474-610-8378 and -2455 Regina SaskTel 474-810-8378 and -2455 Saskatoon SaskTel

Calls successfully completed to test numbers will receive the following announcement:

You have successfully completed a call to the 474 Area Code Test Number at [CARRIER NAME] in Saskatchewan, Canada.

The disconnection dates for the test numbers will be between 1 November 2021 and 7 December 2021.

Central Office (NXX) Codes within NPA 474 may be assigned to TSPs starting from 2 April 2021 but cannot be activated in the PSTN prior to the Relief Date of 2 October 2021.

General questions about this relief activity may be directed to Edward Antecol or Suresh Khare, of the Canadian Numbering Administrator (CNA), at 613-702-0016 ext. 106 and 613-702-0016 ext. 201, respectively. Specific questions related to telecommunications services and network routing should be directed to the appropriate TSP.

Attachments

Attachment 1 Map of the NPA 306/639 area (After relief the NPA 306/639 complex will become the NPA 306/474/639/ complex)

Attachment 2 Exchange Areas in NPA 306/63

Aberdeen Dinsmore Lampman Allan Duck Lake Langenburg Alvena Dundurn Langham Asquith Earl Grey Lanigan Assiniboia Eastend Lashburn Avonlea Edam Leader Balcarres Elrose Leask Balgonie Esterhazy Lemberg Beauval Estevan Leoville Beechy Eston Lestock Bengough Eyebrow Lloydminster Bethune Fillmore Loon Lake Bienfait Foam Lake Lucky Lake Big River Fond Du Lac Lumsden Biggar Fort Qu'Appelle Luseland Birch Hills Francis Macklin Blaine Lake Frontier Maidstone Borden Glaslyn Mankota Briercrest Goodsoil Maple Creek Broadview Gravelbourg Marquis Bruno Green Lake Marshall Buffalo Narrows Grenfell Maryfield Cabri Gull Lake Maymont Calder Hafford Meacham Canoe Narrows Hague Meadow Lake Canora Hanley Meath Park Canwood Hepburn Melfort Carlyle Herbert Melville Carnduff Hodgeville Meota Carrot River Holdfast Midale Central Butte Hudson Bay Milestone Christopher Lake Humboldt Montmartre Churchbridge Ile-A-La-Crosse Moose Jaw Climax Imperial Moosomin Coderre Indian Head Morse Colonsay Invermay Mortlach Consul Ituna Mossbank Coronach Kamsack Naicam Craik Kelvington Neidpath Creighton Kerrobert Neilburg Cudworth Kincaid Neville Cumberland House Kindersley Nipawin Cupar Kinistino Nokomis Cut Knife Kipling Norquay Dalmeny Kyle North Battleford Davidson La Loche North Portal Delisle La Ronge Odessa Dillon Lafleche Osler Outlook Strasbourg Oxbow Sturgis Paddockwood Swift Current Pangman Theodore Paradise Hill Tisdale Patuanak Torquay Pelican Narrows Tribune Pelly Turnor Lake Pennant Turtleford Pense Unity Perdue Uranium City Pierceland Val Marie Pinehouse Vanguard Plenty Vonda Ponteix Wadena Porcupine Plain Wakaw Preeceville Waldheim Prince Albert Waskesiu Lake Prudhomme Watrous Punnichy Watson Qu'Appelle Wawota Quill Lake Webb Radisson Weyburn Radville Whitewood Raymore Wilcox Redvers Wilkie Regina Wollaston Lake Regina Beach Wolseley Rhein Wynyard Riceton Yellow Creek Rockglen Yellow Grass Rose Valley Yorkton Rosetown Rosthern Rouleau Saltcoats Sandy Bay Saskatoon Semans Shaunavon Shellbrook Smeaton Southend Southey Speers Spiritwood Springside St. Louis St. Walburg Stanley Mission Stony Rapids Stoughton