Ontario, Canada
Eastern Time
1:23 AM
Area Code
548
State / Province
Ontario
Country
Canada
Time Zone
Eastern Time
Area code 548 covers 170 cities and communities across Ontario, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+15485550100">+15485550100</a><a href="tel:+15485550199">+15485550199</a>Look up which exchange in Ontario a specific 548 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
514 active prefixes in this area code, assigned as 514 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 514
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 548-200 | A | Belle River | Landline or VoIP | IXICA COMMUNICATIONS, INC. (812H) | WNDSON12MMD | 888 | 805120 | — |
| 548-201 | A | Chatham | Landline | BELL ONTARIO (8051) | CHHMON17IMD | 888 | 805101 | — |
| 548-202 | A | Clinton | Landline | BELL ONTARIO (8051) | CLTNON05DMD | 888 | 805127 | — |
| 548-203 | A | Sarnia | Landline | BELL ONTARIO (8051) | SARNON30JMD | 888 | 805128 | — |
| 548-204 | A | Windsor | Landline | BELL ONTARIO (8051) | WNDSON12KMD | 888 | 805120 | — |
| 548-205 | A | St Thomas | Landline | BELL ONTARIO (8051) | STTMON283MD | 888 | 805119 | — |
| 548-206 | A | London | Landline | BELL ONTARIO (8051) | LONDON14XOX | 888 | 805131 | — |
| 548-207 | A | Woodstock | Landline | BELL ONTARIO (8051) | WDSTON45DMD | 888 | 805135 | — |
| 548-208 | A | Owen Sound | Landline | BELL ONTARIO (8051) | OWSDON59EMD | 888 | 805122 | — |
| 548-209 | A | Guelph | Landline | BELL ONTARIO (8051) | GLPHON22RMD | 888 | 805144 | — |
| 548-210 | A | Brantford | Landline | BELL ONTARIO (8051) | BTFDON17OMD | 888 | 805107 | — |
| 548-212 | A | Kitchener-Waterloo | Landline | BELL ONTARIO (8051) | KTNRON06WMD | 888 | 805143 | — |
| 548-213 | A | Orangeville | Landline | BELL ONTARIO (8051) | OGVLON236MD | 888 | 805117 | — |
| 548-214 | A | Simcoe | Landline | BELL ONTARIO (8051) | SIMCON307MD | 888 | 805123 | — |
| 548-215 | A | Stratford | Landline | BELL ONTARIO (8051) | SRFRON38IMD | 888 | 805137 | — |
| 548-216 | A | London | Landline | BELL ONTARIO (8051) | LONDON14XQX | 888 | 805131 | — |
| 548-217 | A | London | Landline | BELL ONTARIO (8051) | LONDON16BMD | 888 | 805131 | — |
| 548-218 | A | Galt | Landline | BELL ONTARIO (8051) | GALTON046MD | 888 | 805143 | — |
| 548-219 | A | Kitchener-Waterloo | Landline | BELL ONTARIO (8051) | KTNRON095MD | 888 | 805143 | — |
| 548-220 | A | Harriston | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | HARSON061MD | 888 | 805137 | — |
| 548-221 | A | Mitchell | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | MTCHON160MD | 888 | 805137 | — |
| 548-222 | A | Palmerston | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | PLMNON360MD | 888 | 805137 | — |
| 548-223 | A | Tavistock | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | TVSTON391MD | 888 | 805137 | — |
| 548-224 | A | Bothwell | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | BTWLON160MD | 888 | 805101 | — |
| 548-225 | A | Burford | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | BUFRON180MD | 888 | 805107 | — |
| 548-227 | A | Elmira | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | EMIRON031MD | 888 | 805143 | — |
| 548-228 | A | New Hamburg | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | NHBGON101MD | 888 | 805143 | — |
| 548-229 | A | Watford | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | WTFDON310MD | 888 | 805128 | — |
| 548-230 | A | Pelee Island | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | PLISON160MD | 888 | 805120 | — |
| 548-231 | A | Norwich | Landline or VoIP | TELUS INTEGRATED COMMUNICATIONS (2782) | NRWCON400MD | 888 | 805135 | — |
| 548-232 | A | Bright's Grove | Landline or VoIP | ISP TELECOM, INC. (4727) | SARNON304MD | 888 | 805128 | — |
| 548-233 | A | Petrolia | Landline or VoIP | ISP TELECOM, INC. (4727) | SARNON304MD | 888 | 805128 | — |
| 548-234 | A | Ailsa Craig | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-235 | A | Centralia | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-236 | A | Crediton | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-237 | A | Lucan | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-238 | A | Nairn | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-239 | A | Belmont | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-240 | A | Melbourne | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-241 | A | Mount Brydges | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-242 | A | Wardsville | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-243 | A | Dorchester | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-244 | A | Harrietsville | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-245 | A | Thorndale | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-246 | A | Ilderton | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-247 | A | Kerwood | Landline or VoIP | FIBERNETICS CORPORATION (464D) | LONDON14X0X | 888 | 805131 | — |
| 548-248 | A | Goderich | Landline or VoIP | FIBERNETICS CORPORATION (464D) | CLTNON055MD | 888 | 805127 | — |
| 548-249 | A | Belle River | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-250 | A | Corunna | Landline or VoIP | ISP TELECOM, INC. (4727) | SARNON304MD | 888 | 805128 | — |
| 548-251 | A | Wyoming | Landline or VoIP | ISP TELECOM, INC. (4727) | SARNON304MD | 888 | 805128 | — |
| 548-252 | A | Emeryville | Landline or VoIP | ISP TELECOM, INC. (4727) | WNDSON120MD | 888 | 805120 | — |
| 548-253 | A | La Salle | Landline or VoIP | ISP TELECOM, INC. (4727) | WNDSON120MD | 888 | 805120 | — |
| 548-254 | A | Durham | Landline or VoIP | WIGHTMAN COMMUNICATIONS LTD. - ON (138D) | OWSDONAN0MD | 888 | 805122 | — |
| 548-255 | A | Kitchener-Waterloo | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | KTNRONACAMD | 888 | 805143 | — |
| 548-256 | A | Orangeville | Landline or VoIP | FIBERNETICS CORPORATION (464D) | OGVLONJL0MD | 888 | 805117 | — |
| 548-257 | A | Comber | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-258 | A | Stoney Point | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-259 | A | Woodslee | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-260 | A | Emeryville | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-261 | A | Pleasant Park | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-262 | A | Harrow | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-263 | A | La Salle | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-264 | A | Maidstone | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-265 | A | McGregor | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-266 | A | Pelee Island | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-267 | A | Wheatley | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-268 | A | Arthur | Landline or VoIP | FIBERNETICS CORPORATION (464D) | OGVLON233MD | 888 | 805117 | — |
| 548-269 | A | Dundalk | Landline or VoIP | FIBERNETICS CORPORATION (464D) | OGVLON233MD | 888 | 805117 | — |
| 548-270 | A | Grand Valley | Landline or VoIP | FIBERNETICS CORPORATION (464D) | OGVLON233MD | 888 | 805117 | — |
| 548-271 | A | Holstein | Landline or VoIP | FIBERNETICS CORPORATION (464D) | OGVLON233MD | 888 | 805117 | — |
| 548-272 | A | Mount Forest | Landline or VoIP | FIBERNETICS CORPORATION (464D) | OGVLON233MD | 888 | 805117 | — |
| 548-273 | A | Delhi | Landline or VoIP | FIBERNETICS CORPORATION (464D) | SIMCON305MD | 888 | 805123 | — |
| 548-274 | A | Jarvis | Landline or VoIP | FIBERNETICS CORPORATION (464D) | SIMCON305MD | 888 | 805123 | — |
| 548-275 | A | Langton | Landline or VoIP | FIBERNETICS CORPORATION (464D) | SIMCON305MD | 888 | 805123 | — |
| 548-276 | A | Port Dover | Landline or VoIP | FIBERNETICS CORPORATION (464D) | SIMCON305MD | 888 | 805123 | — |
| 548-277 | A | Port Rowan | Landline or VoIP | FIBERNETICS CORPORATION (464D) | SIMCON305MD | 888 | 805123 | — |
| 548-278 | A | Waterford | Landline or VoIP | FIBERNETICS CORPORATION (464D) | SIMCON305MD | 888 | 805123 | — |
| 548-279 | A | Kitchener-Waterloo | Landline or VoIP | FIBERNETICS CORPORATION (464D) | KTNRON06X2X | 888 | 805143 | — |
| 548-280 | A | Clinton | Landline or VoIP | DISTRIBUTEL COMMUNICATIONS LIMITED - ON (082E) | CLTNON057MD | 888 | 805127 | — |
| 548-281 | A | Goderich | Landline or VoIP | DISTRIBUTEL COMMUNICATIONS LIMITED - ON (082E) | CLTNON057MD | 888 | 805127 | — |
| 548-282 | A | St George | Landline or VoIP | ROGERS COMMUNICATIONS CANADA INC. (571G) | STGRON27AMD | 888 | 805107 | — |
| 548-283 | A | Seaforth | Landline or VoIP | DISTRIBUTEL COMMUNICATIONS LIMITED - ON (082E) | CLTNON057MD | 888 | 805127 | — |
| 548-284 | A | Wingham | Landline or VoIP | DISTRIBUTEL COMMUNICATIONS LIMITED - ON (082E) | CLTNON057MD | 888 | 805127 | — |
| 548-285 | A | Thamesford | Landline or VoIP | QUADRO COMMUNICATIONS CO-OPERATIVE INC. - ON (004G) | WDSTON45CMD | 888 | 805135 | — |
| 548-286 | A | Burford | Landline or VoIP | ISP TELECOM, INC. (4727) | BTFDON17EMD | 888 | 805107 | — |
| 548-287 | A | Merlin | Landline or VoIP | ISP TELECOM, INC. (4727) | CHHMON17FMD | 888 | 805101 | — |
| 548-288 | A | Kitchener-Waterloo | Landline or VoIP | ROGERS COMMUNICATIONS CANADA INC. (743B) | KTNRONREAMD | 888 | 805143 | — |
| 548-289 | A | Bothwell | Landline or VoIP | ISP TELECOM, INC. (4727) | CHHMON17FMD | 888 | 805101 | — |
| 548-290 | A | Durham | Landline or VoIP | IRISTEL INC. - ON (154E) | OWSDON593MD | 888 | 805122 | — |
| 548-291 | A | Durham | Landline or VoIP | IRISTEL INC. - ON (154E) | OWSDON593MD | 888 | 805122 | — |
| 548-292 | A | Windsor | Landline or VoIP | FIBERNETICS CORPORATION (464D) | WNDSON12CMD | 888 | 805120 | — |
| 548-293 | A | Walkerton | Landline or VoIP | IRISTEL INC. - ON (154E) | OWSDON593MD | 888 | 805122 | — |
| 548-294 | A | Simcoe | Wireless | VIDEOTRON LTD. (328F) | SIMCON308MD | 888 | 805123 | — |
| 548-295 | A | Owen Sound | Wireless | VIDEOTRON LTD. (328F) | OWSDON598MD | 888 | 805122 | — |
| 548-296 | A | Ohsweken | Landline or VoIP | ISP TELECOM, INC. (4727) | BTFDON17EMD | 888 | 805107 | — |
| 548-297 | A | Brigden | Landline or VoIP | ISP TELECOM, INC. (4727) | SARNON304MD | 888 | 805128 | — |
| 548-298 | A | Tillsonburg | Landline or VoIP | IRISTEL INC. - ON (154E) | WDSTONJG0MD | 888 | 805135 | — |
| 548-299 | A | Comber | Landline or VoIP | IXICA COMMUNICATIONS, INC. (812H) | WNDSON12MMD | 888 | 805120 | — |
| 548-300 | A | Stoney Point | Landline or VoIP | IXICA COMMUNICATIONS, INC. (812H) | WNDSON12MMD | 888 | 805120 | — |
| 548-301 | A | London | Wireless | BELL CELLULAR, INC. (6574) | LONDONBDAMD | 888 | 805131 | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
514
Assignment Blocks
514
Rate Centers
170
Carriers of Record
21
| Type | Blocks | Share |
|---|---|---|
| Landline | 18 | 4% |
| Landline or VoIP | 420 | 82% |
| Wireless | 76 | 15% |
| Carrier | Blocks |
|---|---|
| FIBERNETICS CORPORATION | 159 |
| ROGERS COMMUNICATIONS CANADA INC. | 76 |
| IRISTEL INC. - ON | 63 |
| ISP TELECOM, INC. | 57 |
| IXICA COMMUNICATIONS, INC. | 27 |
| DISTRIBUTEL COMMUNICATIONS LIMITED - ON | 21 |
| BELL ONTARIO | 18 |
| TELUS INTEGRATED COMMUNICATIONS | 17 |
| COGECO CONNEXION INC. | 16 |
| VIDEOTRON LTD. | 13 |
| 11 other carriers | 47 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| London | 38 | 38 |
| Kitchener-Waterloo | 25 | 25 |
| Windsor | 20 | 20 |
| Brantford | 13 | 13 |
| Guelph | 12 | 12 |
| Listowel | 11 | 11 |
| Sarnia | 11 | 11 |
| Leamington | 9 | 9 |
| Mount Forest | 9 | 9 |
| Chatham | 8 | 8 |
| Essex | 8 | 8 |
| Orangeville | 7 | 7 |
| Owen Sound | 7 | 7 |
| Simcoe | 7 | 7 |
| St Thomas | 7 | 7 |
| Woodstock | 7 | 7 |
| Goderich | 6 | 6 |
| Stratford | 6 | 6 |
| Clinton | 5 | 5 |
| Kingsville | 5 | 5 |
| Pelee Island | 5 | 5 |
| Tavistock | 5 | 5 |
| Tecumseh | 5 | 5 |
| Amherstburg | 4 | 4 |
| Comber | 4 | 4 |
| Elmira | 4 | 4 |
| Emeryville | 4 | 4 |
| Galt | 4 | 4 |
| La Salle | 4 | 4 |
| New Hamburg | 4 | 4 |
| Pleasant Park | 4 | 4 |
| Tillsonburg | 4 | 4 |
| Acton | 3 | 3 |
| Ayr | 3 | 3 |
| Belle River | 3 | 3 |
| Belmont | 3 | 3 |
| Bothwell | 3 | 3 |
| Breslau | 3 | 3 |
| Brigden | 3 | 3 |
| Burford | 3 | 3 |
| Durham | 3 | 3 |
| Harrow | 3 | 3 |
| Hespeler | 3 | 3 |
| Ingersoll | 3 | 3 |
| Lynden | 3 | 3 |
| Maidstone | 3 | 3 |
| McGregor | 3 | 3 |
| Palmerston | 3 | 3 |
| Paris | 3 | 3 |
| Petrolia | 3 | 3 |
| Port Lambton | 3 | 3 |
| Sombra | 3 | 3 |
| St George | 3 | 3 |
| Stoney Point | 3 | 3 |
| Watford | 3 | 3 |
| Wheatley | 3 | 3 |
| Wingham | 3 | 3 |
| Woodslee | 3 | 3 |
| Wyoming | 3 | 3 |
| Ailsa Craig | 2 | 2 |
| Alvinston | 2 | 2 |
| Arthur | 2 | 2 |
| Aylmer | 2 | 2 |
| Beachville | 2 | 2 |
| Blenheim | 2 | 2 |
| Bright's Grove | 2 | 2 |
| Caledon | 2 | 2 |
| Corunna | 2 | 2 |
| Courtright | 2 | 2 |
| Crediton | 2 | 2 |
| Dorchester | 2 | 2 |
| Drayton | 2 | 2 |
| Dresden | 2 | 2 |
| Drumbo | 2 | 2 |
| Feversham | 2 | 2 |
| Flesherton | 2 | 2 |
| Glencoe | 2 | 2 |
| Grand Valley | 2 | 2 |
| Harrietsville | 2 | 2 |
| Harriston | 2 | 2 |
| Hepworth | 2 | 2 |
| Highgate | 2 | 2 |
| Hillsburgh | 2 | 2 |
| Ilderton | 2 | 2 |
| Langton | 2 | 2 |
| Linwood | 2 | 2 |
| Markdale | 2 | 2 |
| Merlin | 2 | 2 |
| Mitchell | 2 | 2 |
| Mount Pleasant | 2 | 2 |
| Norwich | 2 | 2 |
| Oil Springs | 2 | 2 |
| Port Elgin | 2 | 2 |
| Preston | 2 | 2 |
| Ridgetown | 2 | 2 |
| Rockwood | 2 | 2 |
| Scotland | 2 | 2 |
| Seaforth | 2 | 2 |
| Shakespeare | 2 | 2 |
| Strathroy | 2 | 2 |
| Thamesford | 2 | 2 |
| Thamesville | 2 | 2 |
| Thornbury | 2 | 2 |
| Tilbury | 2 | 2 |
| Walkerton | 2 | 2 |
| Wallaceburg | 2 | 2 |
| Waterford | 2 | 2 |
| Wellesley | 2 | 2 |
| Wiarton | 2 | 2 |
| Atwood | 1 | 1 |
| Auburn | 1 | 1 |
| Baden | 1 | 1 |
| Blyth | 1 | 1 |
| Bright | 1 | 1 |
| Brownsville | 1 | 1 |
| Brussels | 1 | 1 |
| Cargill | 1 | 1 |
| Centralia | 1 | 1 |
| Chatsworth | 1 | 1 |
| Chesley | 1 | 1 |
| Delhi | 1 | 1 |
| Dublin | 1 | 1 |
| Dundalk | 1 | 1 |
| Dutton | 1 | 1 |
| Eastwood | 1 | 1 |
| Elora | 1 | 1 |
| Embro | 1 | 1 |
| Erin | 1 | 1 |
| Exeter | 1 | 1 |
| Fergus | 1 | 1 |
| Fingal | 1 | 1 |
| Forest | 1 | 1 |
| Gorrie | 1 | 1 |
| Hanover | 1 | 1 |
| Hensall | 1 | 1 |
| Hickson | 1 | 1 |
| Holstein | 1 | 1 |
| Innerkip | 1 | 1 |
| Jarvis | 1 | 1 |
| Kerwood | 1 | 1 |
| Kintore | 1 | 1 |
| Lambeth | 1 | 1 |
| Lucan | 1 | 1 |
| Lucknow | 1 | 1 |
| Meaford | 1 | 1 |
| Melbourne | 1 | 1 |
| Monkton | 1 | 1 |
| Mount Brydges | 1 | 1 |
| Nairn | 1 | 1 |
| New Dundee | 1 | 1 |
| Ohsweken | 1 | 1 |
| Otterville | 1 | 1 |
| Parkhill | 1 | 1 |
| Plattsville | 1 | 1 |
| Port Dover | 1 | 1 |
| Port Rowan | 1 | 1 |
| Port Stanley | 1 | 1 |
| Princeton | 1 | 1 |
| Rodney | 1 | 1 |
| Sauble Beach | 1 | 1 |
| Shedden | 1 | 1 |
| Southampton | 1 | 1 |
| Sparta | 1 | 1 |
| St Clements | 1 | 1 |
| St Jacobs | 1 | 1 |
| St Marys | 1 | 1 |
| Tara | 1 | 1 |
| Thorndale | 1 | 1 |
| Wardsville | 1 | 1 |
| West Lorne | 1 | 1 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
548 now shares its territory with 382. Because of this overlay, local calls in this region must be dialed with all ten digits.
Area code 548 is a North American Numbering Plan (NANP) telephone area code assigned to Ontario, Canada. It is one of 19 area codes serving Ontario. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 548 is an active North American Numbering Plan (NANP) area code, currently assigned to Ontario, Canada. It is safe to answer or dial calls using this area code.
Area code 548 covers 170 cities and communities in Ontario, including Acton, Ailsa Craig, Alvinston, Amherstburg, Arthur, and 165 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 548 area code observe Eastern Time (IANA timezone: America/New_York). Eastern Time is UTC−5 in winter (EST) and UTC−4 in summer (EDT). When placing a call to a 548 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Ontario, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 548 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 548 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 548 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +15485550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.