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.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
478-423 A Macon GA MACNGAGAX9X  446   2025-09-15   
478-423 0 Macon GA MACNGAGAX9X  446   2025-09-15   
479-572 A Fort Smith AR FTSMAR08CMD  526   2025-10-02   
479-572 0 Fort Smith AR FTSMAR08CMD  526   2025-10-02   
501-583 A Little Rock AR LTRKARZOEMD  528   2026-01-11   
501-583 0 Little Rock AR LTRKARZOEMD  528   2026-01-11   
502-246 A Louisville KY LSVLKYAP81Z  462   2026-01-31   
502-246 0 Louisville KY LSVLKYAP81Z  462   2026-01-31   
504-981 A New Orleans LA NWORLASDOMD  490   2026-04-24   
504-981 0 New Orleans LA NWORLASDOMD  490   2026-04-24   
505-673 A Albuquerque NM ALBQNM10XCX  664   2026-04-05   
505-673 0 Albuquerque NM ALBQNM10XCX  664   2026-04-05   
507-612 A Rochester MN ROCHMNHIXCX  620   2026-02-02   
507-612 0 Rochester MN ROCHMNHIXCX  620   2026-02-02   
509-615 A Elk-Greenbluff WA SPKNWADZDMD  676      
509-615 0 Elk-Greenbluff WA SPKNWADZDMD  676   2025-09-15   
515-390 A Des Moines IA DESMIAITXGX  632   2025-09-25   
515-390 0 Des Moines IA DESMIAITXGX  632   2025-09-25   
517-385 A Lansing MI LNNGMIDCPMD  346   2026-03-28   
517-385 0 Lansing MI LNNGMIDCPMD  346   2026-03-28   
520-594 A Tucson AZ TCSMAZCHLMD  668      
520-594 8 Tucson AZ TCSMAZCHLMD  668   2026-01-19   
530-267 A Chico CA CHICCACWDMD  724      
530-267 2 Chico CA CHICCACWDMD  724   2025-10-06   
531-427 A Lincoln NE LNCLNEACBMD  958   2025-09-06   
531-427 0 Lincoln NE LNCLNEACBMD  958   2025-09-06   
531-434 A Omaha NE OMAKNEYWFMD  644   2026-01-31   
531-434 0 Omaha NE OMAKNEYWFMD  644   2026-01-31   
539-370 A Tulsa OK TULSOKTB16Z  538   2026-02-08   
539-370 0 Tulsa OK TULSOKTB16Z  538   2026-02-08   
551-433 A Hackensack NJ JRCYNJ65X3X  224   2026-01-31   
551-433 0 Hackensack NJ JRCYNJ65X3X  224   2026-01-31   
557-246 A St Louis MO STLSMOGZZMD  520   2026-01-30   
557-246 0 St Louis MO STLSMOGZZMD  520   2026-01-30   
559-962 A Fresno CA FRSNCA0111Z  728   2025-09-25   
559-962 0 Fresno CA FRSNCA0111Z  728   2025-09-25   
563-257 A Davenport IA DVNPIA80X1Y  634   2025-09-25   
563-257 0 Davenport IA DVNPIA80X1Y  634   2025-09-25   
567-502 A Lima OH MNFDOHMMDMD  923   2026-04-11   
567-502 0 Lima OH MNFDOHMMDMD  923   2026-04-11   
572-278 A Oklahoma City OK OKCYOKCE35Z  536   2026-02-08   
572-278 0 Oklahoma City OK OKCYOKCE35Z  536   2026-02-08   
574-415 A South Bend IN SBNDIN13TMD  332   2026-01-30   
574-415 0 South Bend IN SBNDIN13TMD  332   2026-01-30   
582-284 A Erie PA ERIEPAMFAMD  924   2025-09-20   
582-284 0 Erie PA ERIEPAMFAMD  924   2025-09-20   
582-293 A Altoona PA ALNAPAACX1X  230   2026-02-08   
582-293 0 Altoona PA ALNAPAACX1X  230   2026-02-08   
585-780 A Rochester NY ROCHNYEIFMD  974   2025-09-13   
585-780 0 Rochester NY ROCHNYEIFMD  974   2025-09-13   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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