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Country Code Decoder

North American NPAs starting 6

NPACountryTime Difference (From GMT)StateState Abbrv.Service DateComments
600CANADA-3.5 to -8Canada/Services   
601USA-6MississippiMS  
602USA-7ArizonaAZ  
603USA-5New HampshireNH  
604CANADA-8British Columbia   
605USA-6South DakotaSD  
606USA-5KentuckyKY  
607USA-5New YorkNY  
608USA-6WisconsinWI  
609USA-5New JerseyNJ  
610USA-5PennsylvaniaPA08 Jan 1994 
612USA-6MinnesotaMN  
613CANADA-5Ontario   
614USA-5OhioOH  
615USA-5 to -6TennesseeTN  
616USA-5MichiganMI  
617USA-5MassachusettsMA  
618USA-6IllinoisIL  
619USA-8CaliforniaCA  
620USA-6KansasKS03 Feb 2001 
622CANADA-4 to -10  23 Mar 2015Covers whole of Canada
623USA-7ArizonaAZ01 Mar 1999 
626USA-8CaliforniaCA14 Jun 1997 
628USA-8CaliforniaCA16 Aug 2014 
629USA-5 to -6TennesseeTN26 Jul 2014 
630USA-6IllinoisIL03 Aug 1996 
631USA-5New YorkNY01 Nov 1999 
636USA-5MissouriMO22 May 1999 
639CANADA-6Saskatchewan 25 May 2013 
640USA-5New JerseyNJ17 Sep 2018 
641USA-6IowaIA09 Jul 2000 
646USA-5New YorkNY01 Jul 1999 
647CANADA-5Ontario 05 Mar 2001 
649TURKS AND CAICOS ISLANDS-5  01 Jun 1997 
650USA-8CaliforniaCA02 Aug 1997 
651USA-6MinnesotaMN12 Jul 1998 
657USA-8CaliforniaCA23 Aug 2008 
658JAMAICA-5  30 Nov 2018 
659USA-6AlabamaAL Proposed
660USA-5MissouriMO12 Oct 1997 
661USA-8CaliforniaCA13 Feb 1999 
662USA-6MississippiMS19 Apr 1999 
664MONTSERRAT-4  01 Jul 1996 
667USA-5MarylandMD24 Mar 2012 
669USA-8CaliforniaCA20 Nov 2012 
670NORTHERN MARIANAS (CNMI)10  01 Jul 1997 
671GUAM10  01 Jul 1997 
678USA-5GeorgiaGA01 Jun 1998 
679USA-5MichiganMI Proposed
680USA-5New YorkNY11 Mar 2017 
681USA-5West VirginiaWV26 Jul 2008 
682USA-6 to -7TexasTX07 Oct 2000 
684AMERICAN SAMOA-11  02 Oct 2004 
689USA-5 to -6FloridaFL Suspended

See World Zone 1 for explanation of "NPA"

Where shown:

Time Diff. is with respect to GMT (UCT)
Suspended
Pending
Proposed
indicate the code is not in use: the "Service Date" has been delayed or not set
Service Date is the date code becomes (or became) effective. If no date is shown, the code was introduced before 1995
 

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Database Updated: 22 Sep 2017

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