TEN DIGIT DIALING

Ten digit dialing (area code + seven digit number) is necessary when two or more area codes cover the same geographic area. This is called an area code overlay. In this situation two or more different homes in the same geographic area can have the same seven digit phone number but each would have a different area code. Ten digit dialing within area code overlays permits the phone companies to route your call to the correct subscriber.

Most area code overlays involve two area codes covering the same geographic area, however, three or more area codes are used in some highly populated areas. An example is in the state of New York where area codes (212, 332, 646 and 917) and (718, 347, 917 and 929) are utilized as overlays.

With seven digit dialing a caller is permitted to dial only the local seven digit number, without the area code, if the call is to another subscriber within the same area code and no overlays exist. Simply being permitted to dial a seven digit number within the same area code does not mean that long distance charges are not incurred.

Important Update: The FCC has approved the 3-digit dialing code 988 for use by the National Suicide Prevention and Mental Health Crisis Hotline. Effective October 24, 2021 eighty-two (82) additional area codes will begin to require ten digit dialing in order for the new 988 dialing code to be put into service. Effective 7/15/2022 ten digit dialing will be mandatory. Read more details about dialing code 988 and other important dates.

AREA CODE	LOCATION	DIALING PLAN	COMMENTS
201	New Jersey	10 Digits	Calls between 551 and 201 may be dialed as 10 digits.
202	District of Columbia	10 Digits	1+10 Digits allowed at the discretion of the service provider.
203	Connecticut	10 Digits
204	Manitoba	10 Digits
205	Alabama	10 Digits	1+10 Digits allowed at the discretion of the service provider
206	Washington	10 Digits
208	Idaho	10 Digits
209	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
210	Texas	10 Digits
212	New York	1+10 Digits
213	California	1+10 Digits
214	Texas	10 Digits
215	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits or 1+10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
217	Illinois	10 Digits	1+10 Digits allowed at the discretion of the service provider
218	Minnesota	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
219	Indiana	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
220	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 220 which are considered local calls.
223	Pennsylvania	10 Digits	Calls between 223 and 717 may be dialed as 10 digits or 1+10 Digits
224	Illinois	1+10 Digits
226	Ontario	10 Digits
234	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 234 which are considered local calls.
236	British Columbia	10 Digits
240	Maryland	10 Digits
248	Michigan	10 Digits
249	Ontario	10 Digits
250	British Columbia	10 Digits
251	Alabama	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
253	Washington	10 Digits
254	Texas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
256	Alabama	10 Digits
262	Wisconsin	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
267	Pennsylvania	10 Digits (see note) otherwise	10 Digits or 1+10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
270	Kentucky	10 Digits
272	Pennsylvania	10 Digits
276	Virginia	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
279	California	1+10 Digits
281	Texas	10 Digits
289	Ontario	10 Digits
301	Maryland	10 Digits
302	Delaware	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
303	Colorado	10 Digits
304	West Virginia	10 Digits
305	Florida	10 Digits
309	Illinois	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
310	California	1+10 Digits
312	Illinois	1+10 Digits
314	Missouri	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
315	New York	10 Digits
317	Indiana	10 Digits
319	Iowa	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
321	Florida	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
323	California	1+10 Digits
326	Ohio	10 Digits	Carriers must allow 1+10 digit dialing except mobile service providers.
330	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 234 which are considered local calls.
331	Illinois	1+10 Digits
332	New York	1+10 Digits
336	North Carolina	10 Digits
337	Louisiana	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
339	Massachusetts	10 Digits
341	California	1+10 Digits
343	Ontario	10 Digits
346	Texas	10 Digits
347	New York	1+10 Digits
351	Massachusetts	10 Digits
352	Florida	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
360	Washington	10 Digits
361	Texas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
364	Kentucky	10 Digits
365	Ontario	10 Digits
367	Quebec	10 Digits
368	Alberta	10 Digits
380	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 380 which are considered local calls.
385	Utah	10 Digits
402	Nebraska	10 Digits
403	Alberta	10 Digits
404	Georgia	10 Digits	1+10 Digits allowed at the discretion of the service provider
405	Oklahoma	10 Digits	1+10 Digits allowed at the discretion of the service provider
406	Montana	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
407	Florida	10 Digits
408	California	1+10 Digits
409	Texas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
410	Maryland	10 Digits
412	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits is permitted between area codes 412, 724, 878. All other calls are 1+10 digits.
414	Wisconsin	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
415	California	1+10 Digits
416	Ontario	10 Digits
417	Missouri	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
418	Quebec	10 Digits
419	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 419 which are considered local calls.
424	California	1+10 Digits
425	Washington	10 Digits
430	Texas	10 Digits
431	Manitoba	10 Digits
437	Ontario	10 Digits
438	Quebec	10 Digits
440	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 440 which are considered local calls.
442	California	1+10 Digits
443	Maryland	10 Digits
445	Pennsylvania	10 Digits
447	Illinois	10 Digits	1+10 Digits allowed at the discretion of the service provider
448	Florida	10 Digits	1+10 Digits allowed at the discretion of the service provider
450	Quebec	10 Digits
458	Oregon	10 Digits
463	Indiana	10 Digits
464	Illinois	1+10 Digits
469	Texas	10 Digits
470	Georgia	10 Digits	1+10 Digits allowed at the discretion of the service provider
474	Saskatchewan	10 Digits
475	Connecticut	10 Digits
478	Georgia	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
480	Arizona	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
484	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits or 1+10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
501	Arkansas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
503	Oregon	10 Digits
504	Louisiana	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
505	New Mexico	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
508	Massachusetts	10 Digits
509	Washington	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
510	California	1+10 Digits
512	Texas	10 Digits
513	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 513 which are considered local calls.
514	Quebec	10 Digits
515	Iowa	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
516	New York	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
518	New York	10 Digits
519	Ontario	10 Digits
520	Arizona	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
530	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
531	Nebraska	10 Digits
534	Wisconsin	10 Digits	1+10 Digits allowed at the discretion of the service provider
539	Oklahoma	10 Digits
540	Virginia	10 Digits	1+10 Digits allowed at the discretion of the service provider.
541	Oregon	10 Digits
548	Ontario	10 Digits
551	New Jersey	10 Digits	Calls between 551 and 201 may be dialed as 10 digits.
557	Missouri	10 Digits
561	Florida	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
562	California	1+10 Digits
564	Washington	10 Digits
567	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 567 which are considered local calls.
570	Pennsylvania	10 Digits
571	Virginia	10 Digits
572	Oklahoma	10 Digits	1+10 Digits allowed at the discretion of the service provider.
574	Indiana	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
575	New Mexico	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
579	Quebec	10 Digits
581	Quebec	10 Digits
582	Pennsylvania	10 Digits	1+10 Digits allowed at the discretion of the service provider
587	Alberta	10 Digits
601	Mississippi	10 Digits
603	New Hampshire	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
604	British Columbia	10 Digits
605	South Dakota	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
607	New York	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
608	Wisconsin	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
609	New Jersey	10 Digits	1+10 Digits for local calls allowed at the discretion of the service provider.
610	Pennsylvania	10 Digits (see note) otherwise 1+10 Digits	10 Digits or 1+10 Digits is permitted between area codes 215, 267, 484 and 610. All other calls are 1+10 digits.
613	Ontario	10 Digits
614	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 614 which are considered local calls.
615	Tennessee	10 Digits
616	Michigan	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
617	Massachusetts	10 Digits
618	Illinois	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
619	California	1+10 Digits
620	Kansas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
626	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
628	California	1+10 Digits
629	Tennessee	10 Digits
630	Illinois	1+10 Digits
631	New York	10 Digits
639	Saskatchewan	10 Digits
640	New Jersey	10 Digits	1+10 Digits allowed at the discretion of the service provider.
646	New York	1+10 Digits
647	Ontario	10 Digits
650	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
656	Florida	10 Digits	10 Digit dialing required effective 01/22/2022.
657	California	1+10 Digits
658	Jamaica	10 Digits
659	Alabama	10 Digits	1+10 Digits allowed at the discretion of the service provider.
660	Missouri	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
662	Mississippi	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
667	Maryland	10 Digits
669	California	1+10 Digits
671	Guam	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
672	British Columbia	10 Digits
678	Georgia	10 Digits	1+10 Digits allowed at the discretion of the service provider
680	New York	10 Digits
681	West Virginia	10 Digits
682	Texas	10 Digits
683	Ontario	10 Digits
689	Florida	10 Digits
702	Nevada	10 Digits
703	Virginia	10 Digits
704	North Carolina	10 Digits
705	Ontario	10 Digits
706	Georgia	10 Digits
707	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
708	Illinois	1+10 Digits
713	Texas	10 Digits
714	California	1+10 Digits
715	Wisconsin	10 Digits	1+10 Digits allowed at the discretion of the service provider
716	New York	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
717	Pennsylvania	10 Digits	Calls between 223 and 717 may be dialed as 10 digits or 1+10 Digits
718	New York	1+10 Digits
719	Colorado	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
720	Colorado	10 Digits
724	Pennsylvania	10 Digits	10 Digits is permitted between area codes 412, 724, 878. All other calls are 1+10 digits.
725	Nevada	10 Digits
726	Texas	10 Digits
731	Tennessee	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
732	New Jersey	10 Digits	10 Digits is permitted between area codes 732 and 848. All other calls are 1+10 digits.
737	Texas	10 Digits
740	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 740 which are considered local calls.
742	Ontario	10 Digits
743	North Carolina	10 Digits
747	California	1+10 Digits
753	Ontario	10 Digits
754	Florida	10 Digits
757	Virginia	10 Digits	1+10 Digits allowed at the discretion of the service provider.
760	California	1+10 Digits
762	Georgia	10 Digits
769	Mississippi	10 Digits
770	Georgia	10 Digits	1+10 Digits allowed at the discretion of the service provider
771	District of Columbia	10 Digits	1+10 Digits allowed at the discretion of the service provider
773	Illinois	1+10 Digits
774	Massachusetts	10 Digits
775	Nevada	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
778	British Columbia	10 Digits
779	Illinois	1+10 Digits
780	Alberta	10 Digits
781	Massachusetts	10 Digits
782	Nova Scotia, Prince Edward Island	10 Digits
785	Kansas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
786	Florida	10 Digits
787	Puerto Rico	10 Digits
801	Utah	10 Digits
802	Vermont	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
803	South Carolina	10 Digits
804	Virginia	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
805	California	1+10 Digits
806	Texas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
808	Hawaii	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
809	Dominican Republic	10 Digits
810	Michigan	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
812	Indiana	10 Digits
813	Florida	10 Digits	10 Digit dialing required effective 01/22/2022.
814	Pennsylvania	10 Digits	1+10 Digits allowed at the discretion of the service provider
815	Illinois	1+10 Digits
816	Missouri	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
817	Texas	10 Digits
818	California	1+10 Digits
819	Quebec	10 Digits
820	California	1+10 Digits
825	Alberta	10 Digits
826	Virginia	10 Digits	1+10 Digits allowed at the discretion of the service provider.
829	Dominican Republic	10 Digits
830	Texas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
832	Texas	10 Digits
838	New York	10 Digits
839	South Carolina	10 Digits	1+10 Digits allowed at the discretion of the service provider
840	California	1+10 Digits
843	South Carolina	10 Digits
845	New York	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
847	Illinois	1+10 Digits
848	New Jersey	10 Digits	10 Digits is permitted between area codes 732 and 848. All other calls are 1+10 digits.
849	Dominican Republic	10 Digits
850	Florida	10 Digits	1+10 Digits allowed at the discretion of the service provider
854	South Carolina	10 Digits
856	New Jersey	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
857	Massachusetts	10 Digits
858	California	1+10 Digits
859	Kentucky	10 Digits
860	Connecticut	10 Digits	10 Digits is required in all Connecticut area codes.
862	New Jersey	10 Digits	10 Digits is permitted between area codes 862 and 973. All other calls are 1+10 digits.
865	Tennessee	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
872	Illinois	1+10 Digits
873	Quebec	10 Digits
878	Pennsylvania	10 Digits	10 Digits is permitted between area codes 412, 724, 878. All other calls are 1+10 digits.
902	Nova Scotia, Prince Edward Island	10 Digits
903	Texas	10 Digits
905	Ontario	10 Digits
906	Michigan	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
907	Alaska	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
908	New Jersey	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
909	California	1+10 Digits
910	North Carolina	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
912	Georgia	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
914	New York	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
915	Texas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
916	California	1+10 Digits
917	New York	1+10 Digits
918	Oklahoma	10 Digits
919	North Carolina	10 Digits
920	Wisconsin	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
925	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
928	Arizona	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
929	New York	1 +10 Digits
930	Indiana	10 Digits
934	New York	10 Digits
937	Ohio	10 Digits	1+ 10 Digits is permitted for calls outside of area code 937 which are considered local calls.
938	Alabama	10 Digits
939	Puerto Rico	10 Digits
940	Texas	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
941	Florida	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
943	Georgia	10 Digits
945	Texas	10 Digits
947	Michigan	10 Digits
948	Virginia	10 Digits	1+10 Digits allowed at the discretion of the service provider.
949	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
951	California	1+10 Digits	1+10 Digits required effective 7/15/2022.
952	Minnesota	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
954	Florida	10 Digits
959	Connecticut	10 Digits	10 Digits is required in all Connecticut area codes.
970	Colorado	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.
971	Oregon	10 Digits
972	Texas	10 Digits
973	New Jersey	10 Digits	10 Digits is permitted between area codes 862 and 973. All other calls are 1+10 digits.
978	Massachusetts	10 Digits
980	North Carolina	10 Digits
983	Colorado	10 Digits
984	North Carolina	10 Digits
986	Idaho	10 Digits
989	Michigan	10 Digits	10 Digit dialing required effective 7/15/2022. 1+10 Digits allowed at the discretion of the service provider.