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.

Dallas, TX

<< 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 Switch OCN LATA LIR Eff date Disc date
214-840 5   9533 SOUTHWESTERN BELL 552      
214-840 6   9533 SOUTHWESTERN BELL 552      
214-840 7   9533 SOUTHWESTERN BELL 552      
214-840 8   9533 SOUTHWESTERN BELL 552      
214-840 9   5562 METROPCS, INC. 552   2007-05-04   
214-841 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-844 A   114J EXIANT COMMUNICATIONS LLC 552      
214-845 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-845 0   5562 METROPCS, INC. 552   2007-01-12   
214-845 1   5562 METROPCS, INC. 552   2007-01-12   
214-845 2   5562 METROPCS, INC. 552   2007-01-12   
214-845 3   9533 SOUTHWESTERN BELL 552      
214-845 4   829J PAETEC ITEL, LLC 552   2011-01-26   
214-845 5   903C ONVOY, LLC - TX 552   2011-01-28   
214-845 6   903C ONVOY, LLC - TX 552   2011-01-28   
214-845 7   903C ONVOY, LLC - TX 552   2011-01-28   
214-845 8   9533 SOUTHWESTERN BELL 552      
214-845 9   9533 SOUTHWESTERN BELL 552      
214-849 A DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-853 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-853 0   5562 METROPCS, INC. 552   2007-03-01   
214-853 1   5562 METROPCS, INC. 552   2007-03-01   
214-853 2   5562 METROPCS, INC. 552   2006-10-24   
214-853 3   5562 METROPCS, INC. 552   2006-11-10   
214-853 4   9533 SOUTHWESTERN BELL 552      
214-853 5   9533 SOUTHWESTERN BELL 552      
214-853 6   9533 SOUTHWESTERN BELL 552      
214-853 7   9533 SOUTHWESTERN BELL 552      
214-853 8   9533 SOUTHWESTERN BELL 552      
214-853 9   9533 SOUTHWESTERN BELL 552      
214-854 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-854 0   5562 METROPCS, INC. 552   2007-03-15   
214-854 1   5562 METROPCS, INC. 552   2006-12-07   
214-854 2   5562 METROPCS, INC. 552   2006-12-07   
214-854 3   829J PAETEC ITEL, LLC 552   2013-02-13   
214-854 4   9533 SOUTHWESTERN BELL 552      
214-854 5   5562 METROPCS, INC. 552   2006-12-07   
214-854 6   5562 METROPCS, INC. 552   2006-12-07   
214-854 7   5562 METROPCS, INC. 552   2006-12-07   
214-854 8   5562 METROPCS, INC. 552   2006-12-07   
214-854 9   5562 METROPCS, INC. 552   2006-12-07   
214-855 A DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-857 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 0   9533 SOUTHWESTERN BELL 552      
214-857 1   9533 SOUTHWESTERN BELL 552      
214-857 2   9533 SOUTHWESTERN BELL 552      
214-857 3   9533 SOUTHWESTERN BELL 552      
214-857 4   9533 SOUTHWESTERN BELL 552      
214-857 5   9533 SOUTHWESTERN BELL 552      
214-857 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2010-04-12   
214-857 7   9533 SOUTHWESTERN BELL 552      
214-857 8   9533 SOUTHWESTERN BELL 552      
214-857 9   9533 SOUTHWESTERN BELL 552      
214-858 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-859 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-859 0   5562 METROPCS, INC. 552   2007-01-12   
214-859 1   9533 SOUTHWESTERN BELL 552      
214-859 2   5562 METROPCS, INC. 552   2007-01-12   
214-859 3   5562 METROPCS, INC. 552   2007-01-12   
214-859 4   5562 METROPCS, INC. 552   2007-01-12   
214-859 5   9533 SOUTHWESTERN BELL 552      
214-859 6   9533 SOUTHWESTERN BELL 552      
214-859 7   5562 METROPCS, INC. 552   2007-01-12   
214-859 8   5562 METROPCS, INC. 552   2007-01-12   
214-859 9   9533 SOUTHWESTERN BELL 552      
214-860 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 0   9533 SOUTHWESTERN BELL 552      
214-860 1   9533 SOUTHWESTERN BELL 552      
214-860 2   9533 SOUTHWESTERN BELL 552      
214-860 3   9533 SOUTHWESTERN BELL 552      
214-860 4   9533 SOUTHWESTERN BELL 552      
214-860 5   9533 SOUTHWESTERN BELL 552      
214-860 6   9533 SOUTHWESTERN BELL 552      
214-860 7   5562 METROPCS, INC. 552   2014-01-03   
214-860 8   9533 SOUTHWESTERN BELL 552      
214-860 9   9533 SOUTHWESTERN BELL 552      
214-861 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-861 0   5562 METROPCS, INC. 552   2007-03-01   
214-861 1   5562 METROPCS, INC. 552   2014-01-03   
214-861 2   9533 SOUTHWESTERN BELL 552      
214-861 3   9533 SOUTHWESTERN BELL 552      
214-861 4   9533 SOUTHWESTERN BELL 552      
214-861 5   5562 METROPCS, INC. 552   2010-02-16   
214-861 6   5562 METROPCS, INC. 552   2010-02-16   
214-861 7   5562 METROPCS, INC. 552   2007-03-01   
214-861 8   5562 METROPCS, INC. 552   2007-03-01   
214-861 9   5562 METROPCS, INC. 552   2007-03-01   
214-863 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 0   9533 SOUTHWESTERN BELL 552      
214-863 1   9533 SOUTHWESTERN BELL 552      
214-863 2   9533 SOUTHWESTERN BELL 552      
214-863 3   9533 SOUTHWESTERN BELL 552      
214-863 4   9533 SOUTHWESTERN BELL 552      
214-863 5   9533 SOUTHWESTERN BELL 552      
214-863 6   9533 SOUTHWESTERN BELL 552      
214-863 7   9533 SOUTHWESTERN BELL 552      
214-863 8   5562 METROPCS, INC. 552   2007-05-04   
214-863 9   5562 METROPCS, INC. 552   2010-09-20   
214-865 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-865 0   9533 SOUTHWESTERN BELL 552   2011-10-16   

<< 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: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.