Ontario, Canada
Eastern Time
4:30 PM
Area Code
437
State / Province
Ontario
Country
Canada
Time Zone
Eastern Time
Area code 437 covers 1 city and community across Ontario, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+14375550100">+14375550100</a><a href="tel:+14375550199">+14375550199</a>Look up which exchange in Ontario a specific 437 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
553 active prefixes in this area code, assigned as 553 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 553
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 437-200 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-201 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-202 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-203 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-204 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-205 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-206 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-207 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-208 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-209 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON433MD | 888 | 805106 | — |
| 437-210 | A | Toronto | Wireless | TELE-MOBILE COMPANY DBA TELUS MOBILITY (8303) | TOROON04AMD | 888 | 805106 | — |
| 437-212 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-213 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-214 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-215 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-216 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-217 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-218 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-219 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-220 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-221 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-222 | A | Toronto | Landline or VoIP | BEANFIELD TECHNOLOGIES INC. - ON (575G) | TOROONXNX5Y | 888 | 805106 | — |
| 437-223 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-224 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-225 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-226 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-227 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-228 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-229 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-230 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-231 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-232 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-233 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-234 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-235 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-236 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-237 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-238 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-239 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-240 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-241 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-242 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-243 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-244 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-245 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-246 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-247 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-248 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-249 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-250 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-251 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-252 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-253 | A | Toronto | Landline or VoIP | ALLSTREAM INC. (8304) | TOROONOBAMD | 888 | 805106 | — |
| 437-254 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-255 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-256 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-257 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-258 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-259 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-260 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-261 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-262 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-263 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-264 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-265 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-266 | A | Toronto | Landline or VoIP | COMWAVE NETWORKS INC. - ON (160G) | TOROONXNX1Y | 888 | 805106 | — |
| 437-267 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-268 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-269 | A | Toronto | Landline or VoIP | FREEDOM MOBILE INC. (787G) | TOROONXNX3Y | 888 | 805106 | — |
| 437-270 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-271 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-272 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-273 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-274 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-275 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-276 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-277 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-278 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-279 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-280 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-281 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-282 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-283 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-284 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON11ZMD | 888 | 805106 | — |
| 437-285 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON11ZMD | 888 | 805106 | — |
| 437-286 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON11ZMD | 888 | 805106 | — |
| 437-287 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-288 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
| 437-289 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-290 | A | Toronto | Landline or VoIP | IRISTEL INC. - ON (154E) | TOROONXNXQX | 888 | 805106 | — |
| 437-291 | A | Toronto | Landline or VoIP | IRISTEL INC. - ON (154E) | TOROONXNXQX | 888 | 805106 | — |
| 437-292 | A | Toronto | Landline or VoIP | IRISTEL INC. - ON (154E) | TOROONXNXQX | 888 | 805106 | — |
| 437-293 | A | Toronto | Landline or VoIP | IRISTEL INC. - ON (154E) | TOROONXNXQX | 888 | 805106 | — |
| 437-294 | A | Toronto | Landline or VoIP | ALLSTREAM INC. (8304) | TOROONOBAMD | 888 | 805106 | — |
| 437-295 | A | Toronto | Landline or VoIP | ALLSTREAM INC. (8304) | TOROONOBAMD | 888 | 805106 | — |
| 437-296 | A | Toronto | Landline or VoIP | ALLSTREAM INC. (8304) | TOROONOBAMD | 888 | 805106 | — |
| 437-297 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON27AMD | 888 | 805106 | — |
| 437-298 | A | Toronto | Wireless | BELL CELLULAR, INC. (6574) | TOROON11ZMD | 888 | 805106 | — |
| 437-299 | A | Toronto | Wireless | FIDO SOLUTIONS INC. - QC (5643) | TOROON43DMD | 888 | 805106 | — |
| 437-300 | A | Toronto | Wireless | ROGERS COMMUNICATIONS CANADA INC. (8821) | TOROON02AMD | 888 | 805106 | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
553
Assignment Blocks
553
Rate Centers
1
Carriers of Record
16
| Type | Blocks | Share |
|---|---|---|
| Landline or VoIP | 142 | 26% |
| Wireless | 411 | 74% |
| Carrier | Blocks |
|---|---|
| ROGERS COMMUNICATIONS CANADA INC. | 166 |
| BELL CELLULAR, INC. | 139 |
| TELE-MOBILE COMPANY DBA TELUS MOBILITY | 58 |
| IRISTEL INC. - ON | 54 |
| FIDO SOLUTIONS INC. - QC | 47 |
| FREEDOM MOBILE INC. | 44 |
| TELUS INTEGRATED COMMUNICATIONS | 11 |
| FIBERNETICS CORPORATION | 10 |
| ALLSTREAM INC. | 8 |
| IRISTEL, INC. | 4 |
| 6 other carriers | 12 |
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 |
|---|---|---|
| Toronto | 553 | 553 |
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.
437 now shares its territory with 942. Because of this overlay, local calls in this region must be dialed with all ten digits.
Area code 437 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. 437 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 437 covers 1 city and community in Ontario, including Toronto. 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 437 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 437 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 + 437 + 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 1 437 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 437 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +14375550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.