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Country Code Decoder

NPA Codes in USA starting with 4

NPACountryTime Difference (From GMT)StateState Abbrv.Service DateComments
401USA-5Rhode IslandRI  
402USA-6NebraskaNE  
404USA-5GeorgiaGA  
405USA-6OklahomaOK  
406USA-7MontanaMT  
407USA-5 to -6FloridaFL  
408USA-8CaliforniaCA  
409USA-6 to -7TexasTX  
410USA-5MarylandMD06 Oct 1991 
411USA Local DQ   
412USA-5PennsylvaniaPA  
413USA-5MassachusettsMA  
414USA-6WisconsinWI  
415USA-8CaliforniaCA  
417USA-5MissouriMO  
419USA-5OhioOH  
423USA-5 to -6TennesseeTN27 Apr 1995 
424USA-8CaliforniaCA31 Dec 2005 
425USA-8WashingtonWA27 Apr 1997 
430USA-6 to -7TexasTX20 Jul 2002 
432USA-6 to -7TexasTX05 Apr 2003 
434USA-5VirginiaVA01 Jun 2001 
435USA-7UtahUT21 Sep 1997 
440USA-5OhioOH16 Aug 1997 
442USA-8CaliforniaCA08 Nov 2008 
443USA-5MarylandMD01 Jun 1997 
445USA-5PennsylvaniaPA08 Mar 2018 
447USA-6IllinoisIL Proposed
456USA International Inbound   
458USA-8OregonOR12 Jul 2009 
463USA IndianaIN15 Nov 2016 
464USA-6IllinoisIL Proposed
469USA-6 to -7TexasTX01 Jul 1999 
470USA-5GeorgiaGA26 Feb 2010 
475USA-5ConnecticutCT16 Jul 2009 
478USA-5GeorgiaGA01 Aug 2000 
479USA-7ArizonaAZ19 Jan 2002 
480USA-7ArizonaAZ01 Mar 1999 
484USA-5PennsylvaniaPA05 Jun 1999 

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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