Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 321J HD CARRIER LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
202-920 A Washington Zone 1 DC   236   2019-03-30   
202-920 9 Washington Zone 1 DC   236   2019-03-30   
205-825 A Birmingham AL   476   2019-03-11   
205-825 9 Birmingham AL   476   2019-03-11   
206-806 A Seattle WA   674   2019-06-07   
206-806 9 Seattle WA   674   2019-06-07   
253-993 3 Tacoma-Waverly WA   674   2019-09-15   
267-667 A Philadelphia Zone 1 PA   228   2019-02-03   
267-667 9 Philadelphia Zone 1 PA   228   2019-02-03   
279-200 A Sacramento: Main DA CA   726      
279-200 9 Sacramento: Main DA CA   726   2019-06-10   
380-799 A Columbus OH   324   2019-03-23   
380-799 9 Columbus OH   324   2019-03-23   
385-799 A Salt Lake City UT   660   2019-05-31   
385-799 9 Salt Lake City UT   660   2019-05-31   
401-799 A Providence RI   130   2019-02-08   
401-799 9 Providence RI   130   2019-02-08   
412-844 A Pittsburgh Zone 8 PA   234   2019-05-16   
412-844 9 Pittsburgh Zone 8 PA   234   2019-05-16   
425-436 6 Bellevue WA   674   2019-09-06   
425-535 A Everett WA   674   2018-12-27   
425-535 9 Everett WA   674   2018-12-27   
425-585 6 Silver Lake WA   674   2019-05-05   
425-585 7 Silver Lake WA   674   2019-08-22   
470-480 A Atlanta GA   438   2019-03-10   
470-480 9 Atlanta GA   438   2019-03-10   
513-993 A Cincinnati OH   922   2019-02-10   
513-993 9 Cincinnati OH   922   2019-02-10   
516-916 A Nassau Zone 1 NY   132   2018-12-16   
516-916 9 Nassau Zone 1 NY   132   2018-12-16   
602-609 A Phoenix AZ   666   2019-08-01   
602-609 9 Phoenix AZ   666   2019-08-01   
628-629 A San Francisco: Central DA CA   722   2019-02-09   
628-629 9 San Francisco: Central DA CA   722   2019-02-09   
641-461 A Charles City IA   632   2019-10-20   
641-461 9 Charles City IA   632   2019-10-20   
667-776 A Baltimore MD   238   2019-11-15   
667-776 9 Baltimore MD   238   2019-11-15   
681-799 A Charleston Zone 1 WV   254   2019-03-23   
681-799 9 Charleston Zone 1 WV   254   2019-03-23   
701-779 A Dickinson ND   638   2019-10-20   
701-779 9 Dickinson ND   638   2019-10-20   
701-791 A Bismarck ND   638   2019-05-31   
701-791 9 Bismarck ND   638   2019-05-31   
716-815 A Buffalo NY   140   2019-03-09   
716-815 9 Buffalo NY   140   2019-03-09   
719-820 A Colorado Springs-Main CO   658   2019-03-10   
719-820 9 Colorado Springs-Main CO   658   2019-03-10   
720-740 A Deckers CO   656   2019-10-20   
720-740 9 Deckers CO   656   2019-10-20   

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Last updated: Sun, 29 Sep 2019 14:17:11 UTC

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