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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
214-840 4 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-840 5 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-840 6 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-840 7 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-840 8 DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-840 9 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-05-04   
214-841 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-844 A DLLSTXRIDS5  9533 SOUTHWESTERN BELL 552      
214-845 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-845 0 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-845 1 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-845 2 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-845 3 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-845 4 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2011-01-26   
214-845 5 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2011-01-28   
214-845 6 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2011-01-28   
214-845 7 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2011-01-28   
214-845 8 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-845 9 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-849 A DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-853 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-853 0 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-03-01   
214-853 1 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-03-01   
214-853 2 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-10-24   
214-853 3 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-11-10   
214-853 4 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-853 5 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-853 6 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-853 7 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-853 8 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-853 9 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-854 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-854 0 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-03-15   
214-854 1 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-12-07   
214-854 2 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-12-07   
214-854 3 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2013-02-13   
214-854 4 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-854 5 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-12-07   
214-854 6 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-12-07   
214-854 7 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-12-07   
214-854 8 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-12-07   
214-854 9 DLLTTXID1MD  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 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 1 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 2 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 3 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 4 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 5 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 6 DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2010-04-12   
214-857 7 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 8 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-857 9 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-858 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-859 A DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-859 0 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-859 1 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-859 2 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-859 3 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-859 4 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-859 5 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-859 6 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-859 7 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-859 8 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-01-12   
214-859 9 DLLSTXRIDS0  9533 SOUTHWESTERN BELL 552      
214-860 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 0 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 1 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 2 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 3 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 4 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 5 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 6 DLLSTXRNDS1  9533 SOUTHWESTERN BELL 552      
214-860 7 DLLTTXID1MD  5562 METROPCS, INC. 552   2014-01-03   
214-860 8 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-860 9 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-861 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-861 0 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-03-01   
214-861 1 DLLTTXID1MD  5562 METROPCS, INC. 552   2014-01-03   
214-861 2 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-861 3 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-861 4 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-861 5 DLLTTXID1MD  5562 METROPCS, INC. 552   2010-02-16   
214-861 6 DLLTTXID1MD  5562 METROPCS, INC. 552   2010-02-16   
214-861 7 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-03-01   
214-861 8 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-03-01   
214-861 9 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-03-01   
214-863 A DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 0 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 1 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 2 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 3 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 4 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 5 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 6 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 7 DLLSTXTADS0  9533 SOUTHWESTERN BELL 552      
214-863 8 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-05-04   
214-863 9 DLLTTXID1MD  5562 METROPCS, INC. 552   2010-09-20   
214-865 A DLLSTXTADS0  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 >>

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.