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: 516C AT&T CORP.

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
530-639 6 Smartsville CA SCRMCA01XEZ  726   2011-09-26   
530-643 8 Yreka CA CHICCA78AMD  724   2011-06-20   
530-645 7 Marysville CA SCRMCA01XEZ  726   2007-03-01   
530-650 8 Woodland CA SCRMCA01XEZ  726   2015-03-10   
530-652 5 Grass Valley: South DA CA SCRMCA01XEZ  726   2011-05-27   
530-655 3 Nicolaus CA SCRMCA01XEZ  726   2011-09-26   
530-665 6 Woodland CA SCRMCA01XEZ  726   2006-06-30   
530-686 6 Homewood CA SCRMCA01XEZ  726   2011-05-27   
530-705 4 Challenge CA CHICCA78AMD  724   2025-01-08   
530-712 9 Oroville CA CHICCA78AMD  724   2011-06-20   
530-719 5 Placerville: South DA CA SCRMCA01XEZ  726   2011-05-27   
530-724 5 Dunnigan CA SCRMCA01XEZ  726   2011-05-27   
530-727 6 Red Bluff CA CHICCA78AMD  724   2011-06-20   
530-729 8 Hornbrook CA CHICCA78AMD  724   2025-01-08   
530-732 8 Gerber CA CHICCA78AMD  724   2011-08-05   
530-745 4 Auburn: Main DA CA SCRMCA01XEZ  726   2006-07-07   
530-746 2 Davis CA SCRMCA01XEZ  726   2007-03-01   
530-762 A Paradise CA CHICCA78AMD  724      
530-762 7 Paradise CA CHICCA78AMD  724   2011-09-18   
530-776 3 Anderson CA CHICCA78AMD  724   2011-06-20   
530-777 9 Marysville CA SCRMCA01XEZ  726   2014-04-24   
530-778 7 Lewiston CA CHICCA78AMD  724   2025-01-08   
530-797 2 Gridley CA SCRMCA01XEZ  726   2011-09-26   
530-802 5 Grass Valley: Main DA CA SCRMCA01XEZ  726   2011-05-27   
530-830 5 Auburn: North DA CA SCRMCA01XEZ  726   2011-05-27   
530-831 5 Portola CA CHICCA78AMD  724   2025-01-15   
530-833 2 Paskenta CA CHICCA78AMD  724   2025-01-15   
530-847 A Alta CA SCRMCA01XEZ  726      
530-847 7 Alta CA SCRMCA01XEZ  726   2012-01-08   
530-861 5 Vina CA CHICCA78AMD  724   2011-08-05   
530-862 5 Downieville CA SCRMCA01XEZ  726   2011-09-26   
530-868 3 Biggs CA CHICCA78AMD  724   2011-08-05   
530-903 3 Placerville: West DA CA SCRMCA01XEZ  726   2011-05-27   
530-918 6 Mount Shasta CA CHICCA78AMD  724   2011-08-05   
530-942 2 Sierraville CA CHICCA78AMD  724   2025-01-15   
530-962 3 Shasta Lake CA CHICCA78AMD  724   2011-08-05   
530-963 4 Stonyford CA CHICCA78AMD  724   2025-01-15   
530-968 3 Elk Creek CA CHICCA78AMD  724   2025-01-08   
530-982 7 Butte City CA CHICCA78AMD  724   2025-01-08   
530-984 A Blairsden CA CHICCA78AMD  724   2025-01-08   
530-984 7 Blairsden CA CHICCA78AMD  724   2025-01-08   
530-985 A Gazelle CA CHICCA78AMD  724   2025-01-08   
530-985 7 Gazelle CA CHICCA78AMD  724   2025-01-08   
530-988 3 Orland CA CHICCA78AMD  724   2011-08-05   
530-989 2 North Yuba CA SCRMCA01XEZ  726   2025-01-15   
530-993 5 Loyalton CA CHICCA78AMD  724   2011-08-05   
534-220 A Chippewa Falls WI CHFLWI11EMD  352      
534-220 7 Chippewa Falls WI CHFLWI11EMD  352   2012-01-28   
539-255 7 Picher OK TLSAOKSMBMD  538   2022-12-12   
539-287 A Yale OK TLSAOKSMBMD  538      
539-287 7 Yale OK TLSAOKSMBMD  538   2022-12-19   
539-290 3 West Uniontown OK FYVLARIAKMD  526   2024-10-07   
539-300 7 Westville OK TLSAOKSMBMD  538   2022-12-12   
539-348 7 South Chetopa OK WCHTKSBRTMD  532   2024-10-07   
539-359 2 Nowata OK TLSAOKSMBMD  538   2024-10-07   
539-386 6 Ripley OK TLSAOKSMBMD  538   2022-12-12   
539-465 6 Afton OK TLSAOKSMBMD  538   2022-12-12   
559-231 A Fresno CA FRSNCA01XCZ  728      
559-231 5 Fresno CA FRSNCA01XCZ  728   2014-09-27   
559-258 6 Del Rey CA FRSNCA01XCZ  728   2010-10-27   
559-326 0 Clovis CA FRSNCA01XCZ  728   2010-10-28   
559-372 A Visalia CA FRSNCA01XCZ  728      
559-372 7 Visalia CA FRSNCA01XCZ  728   2008-04-15   
559-374 5 Fresno CA FRSNCA01XCZ  728   2013-11-05   
559-374 6 Fresno CA FRSNCA01XCZ  728   2014-06-14   
559-375 A Fresno CA FRSNCA01XCZ  728      
559-375 1 Fresno CA FRSNCA01XCZ  728   2005-05-21   
559-377 A Madera CA FRSNCA01XCZ  728      
559-377 5 Madera CA FRSNCA01XCZ  728   2015-08-08   
559-382 5 Mendota CA FRSNCA01XCZ  728   2010-10-27   
559-383 A Avenal CA FRSNCA01XCZ  728      
559-383 7 Avenal CA FRSNCA01XCZ  728   2010-01-28   
559-384 A Burrel CA FRSNCA01XCZ  728      
559-384 7 Burrel CA FRSNCA01XCZ  728   2011-03-11   
559-416 7 Madera CA FRSNCA01XCZ  728   2008-04-15   
559-427 6 Pixley CA FRSNCA01XCZ  728   2010-10-27   
559-428 5 Riverdale CA FRSNCA01XCZ  728   2010-10-26   
559-449 3 Fresno CA FRSNCA01XCZ  728   2009-10-22   
559-463 5 Stratford CA FRSNCA01XCZ  728   2011-08-05   
559-464 3 Terra Bella CA FRSNCA01XCZ  728   2010-10-27   
559-465 5 Three Rivers CA FRSNCA01XCZ  728   2010-10-27   
559-466 6 Tipton CA FRSNCA01XCZ  728   2010-10-27   
559-467 5 Tulare CA FRSNCA01XCZ  728   2008-04-15   
559-515 6 Fresno CA FRSNCA01XCZ  728   2010-08-03   
559-570 8 Fresno CA FRSNCA01XCZ  728   2011-05-15   
559-575 8 Clovis CA FRSNCA01XCZ  728   2014-09-30   
559-587 5 Hanford CA FRSNCA01XCZ  728   2008-04-15   
559-596 5 Dinuba CA FRSNCA01XCZ  728   2010-10-27   
559-654 5 Sequoia CA FRSNCA01XCZ  728   2025-01-15   
559-682 5 Caruthers CA FRSNCA01XCZ  728   2011-08-05   
559-694 2 Firebaugh CA FRSNCA01XCZ  728   2010-10-27   
559-715 3 Chowchilla CA SKTNCA01X6Z  738   2007-09-14   
559-721 A Fresno CA FRSNCA01XCZ  728      
559-721 7 Fresno CA FRSNCA01XCZ  728   2015-04-22   
559-728 9 Fresno CA FRSNCA01XCZ  728   2015-10-04   
559-747 2 Visalia CA FRSNCA01XCZ  728   2014-09-08   
559-763 6 Huron CA FRSNCA01XCZ  728   2010-10-27   
559-769 2 Woodlake CA FRSNCA01XCZ  728   2010-10-27   
559-793 4 Porterville CA FRSNCA01XCZ  728   2008-04-15   
559-802 5 Visalia CA FRSNCA01XCZ  728   2011-08-26   

<< 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 >>

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.