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 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
214-751 0 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-751 1 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-751 2 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2006-09-18   
214-751 3 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2006-09-18   
214-751 4 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-751 5 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-751 6 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2006-09-18   
214-751 7 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2006-09-18   
214-751 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2006-09-18   
214-751 9 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-752 A DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-753 A DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-753 0 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-753 1 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-753 2 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-753 3 DLLTTX01DMD  5562 METROPCS, INC. 552   2007-01-12   
214-753 4 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2010-02-03   
214-753 5 DLLSTXRIDS3  9533 SOUTHWESTERN BELL 552      
214-753 6 DLLTTX01DMD  5562 METROPCS, INC. 552   2007-01-12   
214-753 7 DLLTTX01DMD  5562 METROPCS, INC. 552   2007-01-12   
214-753 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2010-02-03   
214-753 9 DLLTTX01DMD  5562 METROPCS, INC. 552   2007-01-12   
214-754 A DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 A DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 0 DLLTTX01DMD  5562 METROPCS, INC. 552   2007-04-19   
214-756 1 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 2 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 3 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 4 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 5 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 6 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 7 DLLTTX01DMD  5562 METROPCS, INC. 552   2018-01-25   
214-756 8 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-756 9 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-757 A DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 0 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 1 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 2 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 3 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 4 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 5 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 6 DLLTTX01DMD  5562 METROPCS, INC. 552   2009-03-16   
214-757 7 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 8 DLLSTXRIDS4  9533 SOUTHWESTERN BELL 552      
214-757 9 DLLTTX01DMD  5562 METROPCS, INC. 552   2009-03-16   
214-758 A DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-758 0 DLLSTXRIXIY  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 552   2008-03-31   
214-758 1 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-758 2 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-758 3 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      

<< 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 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 >>

Last updated: Sat, 01 Jun 2024 11:59:14 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.