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: 7421 AT&T - LOCAL

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
760-331 A Oceanside: Carlsbad DA CA SNDGCA07DS1  732      
760-331 0 Oceanside: Carlsbad DA CA SNDGCA07DS1  732      
760-449 A Palm Springs CA PLSPCAXGX4Y  973      
760-449 5 Palm Springs CA PLSPCAXGX4Y  973   2003-11-10   
760-449 9 Palm Springs CA PLSPCAXGX4Y  973      
760-484 A Escondido CA SNDGCA07DS1  732      
760-484 5 Escondido CA SNDGCA07DS1  732      
760-484 9 Escondido CA SNDGCA07DS1  732      
760-545 A Imperial CA SNDGCA07DS1  732      
760-545 6 Imperial CA SNDGCA07DS1  732      
760-651 3 Valley Center CA SNDGCA07DS1  732   2003-07-20   
760-790 A Brawley CA SNDGCA0247Z  732      
760-790 0 Brawley CA SNDGCA0247Z  732   2014-05-30   
760-986 A Julian CA OCSDCA112MD  732      
760-986 9 Julian CA OCSDCA112MD  732   2004-01-22   
763-255 A Twin Cities MN MPLSMNDT62H  628      
763-255 9 Twin Cities MN MPLSMNDT62H  628      
763-367 A Twin Cities MN GLVYMNORVMD  628      
763-367 1 Twin Cities MN GLVYMNORVMD  628      
763-367 2 Twin Cities MN GLVYMNORVMD  628      
763-367 3 Twin Cities MN GLVYMNORVMD  628      
763-367 4 Twin Cities MN GLVYMNORVMD  628      
763-367 5 Twin Cities MN GLVYMNORVMD  628      
763-367 8 Twin Cities MN GLVYMNORVMD  628      
763-367 9 Twin Cities MN GLVYMNORVMD  628      
765-809 A Summitville IN   336   2025-09-26   
765-809 9 Summitville IN   336   2025-09-26   
770-523 A Buchanan GA ATLNGABU20Z  438      
770-523 9 Buchanan GA ATLNGABU20Z  438   2022-10-27   
770-790 A Atlanta Northwest GA ATLNGATLXDX  438      
770-790 2 Atlanta Northwest GA ATLNGATLXDX  438      
770-790 9 Atlanta Northwest GA ATLNGATLXDX  438      
773-952 5 Chicago Zone 07-Stewart IL CHCGILCLDS9  358   2007-08-05   
781-228 A Braintree MA FRMNMAWA4MD  128      
781-228 2 Braintree MA FRMNMAWA4MD  128      
801-590 A Murray UT SLKCUTMAXSY  660      
801-590 1 Murray UT SLKCUTMAXSY  660      
801-590 5 Murray UT SLKCUTMAXSY  660      
801-703 A Salt Lake City UT SLKCUTMAXSY  660      
801-703 2 Salt Lake City UT SLKCUTMAXSY  660      
801-703 9 Salt Lake City UT SLKCUTMAXSY  660      
801-790 A Midvale UT SLKCUTMAXSY  660      
801-790 5 Midvale UT SLKCUTMAXSY  660      
801-828 A Salt Lake City UT SLKCUTMAXSY  660      
801-828 1 Salt Lake City UT SLKCUTMAXSY  660      
801-828 9 Salt Lake City UT SLKCUTMAXSY  660      
802-317 A Arlington VT WRJTVTGAXNY  124      
802-317 9 Arlington VT WRJTVTGAXNY  124   2020-05-08   
802-318 A Burlington VT WRJTVTGAXVX  124      
802-318 9 Burlington VT WRJTVTGAXVX  124      

<< 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 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.