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 OCN LATA LIR Eff date Disc date
580-275 4 Clinton OK 515J IP HORIZON LLC 536   2026-04-04   
580-301 8 Altus OK 515J IP HORIZON LLC 536   2026-04-04   
580-329 6 Carrier OK 515J IP HORIZON LLC 536   2026-04-04   
580-337 2 Bessie OK 515J IP HORIZON LLC 536   2026-04-04   
580-356 2 Enid OK 515J IP HORIZON LLC 536   2026-04-04   
580-358 5 Fairmont OK 515J IP HORIZON LLC 536   2026-04-04   
580-367 6 Caddo OK 515J IP HORIZON LLC 536   2026-04-04   
580-374 6 Elk City OK 515J IP HORIZON LLC 536   2026-04-04   
580-394 6 Glencoe OK 515J IP HORIZON LLC 536   2026-04-04   
580-395 9 Medford OK 515J IP HORIZON LLC 536   2026-04-12   
580-396 5 Morrison OK 515J IP HORIZON LLC 536   2026-04-12   
580-401 2 Ponca City OK 515J IP HORIZON LLC 536   2026-04-12   
580-404 3 Roff OK 515J IP HORIZON LLC 536   2026-04-12   
580-408 5 Rattan OK 515J IP HORIZON LLC 536   2026-04-12   
580-409 4 Tupelo OK 515J IP HORIZON LLC 536   2026-04-12   
580-410 6 Wapanucka OK 515J IP HORIZON LLC 536   2026-04-12   
580-412 1 Fairview OK 515J IP HORIZON LLC 536   2026-04-04   
580-413 1 Red Rock OK 515J IP HORIZON LLC 536   2026-04-12   
580-422 8 Billings OK 515J IP HORIZON LLC 536   2026-04-04   
580-450 7 Walters OK 515J IP HORIZON LLC 536   2026-04-12   
580-457 0 Lawton OK 515J IP HORIZON LLC 536   2026-04-12   
580-469 2 Sayre OK 515J IP HORIZON LLC 536   2026-04-12   
580-476 4 Rush Springs OK 515J IP HORIZON LLC 536   2026-04-12   
580-489 1 Fort Towson OK 515J IP HORIZON LLC 536   2026-04-04   
580-498 4 Konawa OK 515J IP HORIZON LLC 536   2026-04-12   
580-499 1 Mangum OK 515J IP HORIZON LLC 536   2026-04-12   
580-502 5 Wilson OK 515J IP HORIZON LLC 536   2026-04-12   
580-505 4 Woodward OK 515J IP HORIZON LLC 536   2026-04-12   
580-506 1 Cache OK 515J IP HORIZON LLC 536   2026-04-04   
580-557 2 Tonkawa OK 515J IP HORIZON LLC 536   2026-04-12   
580-563 3 Blair OK 515J IP HORIZON LLC 536   2026-04-04   
580-566 9 Boswell OK 515J IP HORIZON LLC 536   2026-04-04   
580-570 2 Durant OK 515J IP HORIZON LLC 536   2026-04-04   
580-575 1 Eldorado OK 515J IP HORIZON LLC 536   2026-04-04   
580-596 5 Cherokee OK 515J IP HORIZON LLC 536   2026-04-04   
580-605 0 Duncan OK 515J IP HORIZON LLC 536   2026-04-09   
580-607 A Headrick OK 515J IP HORIZON LLC 536      
580-607 1 Headrick OK 515J IP HORIZON LLC 536   2026-05-03   
580-608 1 Kingston OK 515J IP HORIZON LLC 536   2026-04-12   
580-610 A Lone Wolf OK 515J IP HORIZON LLC 536      
580-610 1 Lone Wolf OK 515J IP HORIZON LLC 536   2026-05-10   
580-619 A Soper OK 515J IP HORIZON LLC 536      
580-619 1 Soper OK 515J IP HORIZON LLC 536   2026-05-10   
580-627 A Stratford OK 515J IP HORIZON LLC 536      
580-627 1 Stratford OK 515J IP HORIZON LLC 536   2026-05-10   
580-629 A Coalgate OK 515J IP HORIZON LLC 536      
580-629 1 Coalgate OK 515J IP HORIZON LLC 536   2026-05-02   
580-640 1 Tishomingo OK 515J IP HORIZON LLC 536   2026-04-12   
580-641 7 Marlow OK 515J IP HORIZON LLC 536   2026-04-12   
580-650 3 Weatherford OK 515J IP HORIZON LLC 536   2026-04-12   

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

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