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: 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
559-326 5 Clovis CA   728   2005-04-29   
559-329 A Tulare CA FRSNCA0112Z  728      
559-329 3 Tulare CA   728      
559-332 8 Squaw Valley CA   728   2013-11-01   
559-334 A Visalia CA FRSNCA0112Z  728      
559-334 6 Visalia CA   728      
559-339 A Porterville CA FRSNCA0112Z  728      
559-339 6 Porterville CA   728      
559-344 6 Fowler CA   728   2011-04-19   
559-348 5 Fresno CA   728   2011-06-02   
559-364 2 San Joaquin CA   728   2011-12-04   
559-366 1 Tulare CA   728   2005-12-05   
559-374 3 Fresno CA   728   2013-11-14   
559-375 7 Fresno CA   728   2006-09-15   
559-383 3 Avenal CA   728   2010-11-28   
559-390 A Alpaugh CA FRSNCA0112Z  728      
559-390 7 Alpaugh CA   728   2007-02-02   
559-391 A Reedley CA FRSNCA0112Z  728      
559-391 2 Reedley CA   728   2014-10-04   
559-403 7 Caruthers CA   728   2014-08-16   
559-404 5 Coalinga CA   728   2013-05-10   
559-405 6 Del Rey CA   728   2017-09-09   
559-407 8 Firebaugh CA   728   2011-12-04   
559-415 7 Hanford CA   728   2007-09-08   
559-423 6 Lemoore CA   728   2004-11-14   
559-424 7 Mendota CA   728   2014-12-08   
559-460 5 Selma CA   728   2005-12-05   
559-465 3 Three Rivers CA   728   2016-04-04   
559-468 5 Woodlake CA   728   2013-08-12   
559-475 5 Fresno CA   728   2008-11-16   
559-475 7 Fresno CA   728   2008-10-18   
559-476 1 Fresno CA   728   2007-03-04   
559-476 2 Fresno CA   728   2007-03-04   
559-476 3 Fresno CA   728   2007-03-04   
559-476 8 Fresno CA   728   2007-03-04   
559-482 8 Burrel CA   728   2013-04-22   
559-517 A Madera CA FRSNCA0112Z  728      
559-527 7 Terra Bella CA   728   2017-09-09   
559-537 A Hanford CA FRSNCA0112Z  728      
559-537 7 Hanford CA   728   2011-06-03   
559-543 3 Huron CA   728   2014-08-16   
559-547 2 Fresno CA   728   2014-04-28   
559-547 3 Fresno CA   728   2014-05-11   
559-558 4 Fresno CA   728   2014-08-09   
559-560 3 Porterville CA   728      
559-577 A Fresno CA FRSNCA0112Z  728      
559-577 1 Fresno CA   728   2005-04-30   
559-596 6 Dinuba CA   728   2010-12-12   
559-605 A Tulare CA FRSNCA0112Z  728      
559-605 3 Tulare CA   728   2019-06-07   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.