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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
214-219 2   9533 SOUTHWESTERN BELL 552      
214-219 3   9533 SOUTHWESTERN BELL 552      
214-219 4   9533 SOUTHWESTERN BELL 552      
214-219 5   9533 SOUTHWESTERN BELL 552      
214-219 6   951G INTEGRATED PATH COMMUNICATIONS, LLC - TX 552   2014-09-20   
214-219 7   9533 SOUTHWESTERN BELL 552      
214-219 8   9533 SOUTHWESTERN BELL 552      
214-219 9   9533 SOUTHWESTERN BELL 552      
214-220 A DLLSTXRODS0  9533 SOUTHWESTERN BELL 552      
214-221 A DLLSTXDIDS0  9533 SOUTHWESTERN BELL 552      
214-224 A DLLSTXLADS0  9533 SOUTHWESTERN BELL 552      
214-224 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2005-02-27   
214-224 1   9533 SOUTHWESTERN BELL 552      
214-224 2   9533 SOUTHWESTERN BELL 552      
214-224 3   9533 SOUTHWESTERN BELL 552      
214-224 4   9533 SOUTHWESTERN BELL 552      
214-224 5   9533 SOUTHWESTERN BELL 552      
214-224 6   9533 SOUTHWESTERN BELL 552      
214-224 7   9533 SOUTHWESTERN BELL 552      
214-224 8   9533 SOUTHWESTERN BELL 552      
214-224 9   9533 SOUTHWESTERN BELL 552      
214-229 A DLLTTXID1MD  5562 METROPCS, INC. 552      
214-229 0   5562 METROPCS, INC. 552   2009-07-04   
214-229 1   5562 METROPCS, INC. 552   2009-07-04   
214-229 2   5562 METROPCS, INC. 552   2009-06-16   
214-229 3   5562 METROPCS, INC. 552   2009-06-16   
214-229 4   5562 METROPCS, INC. 552   2009-06-16   
214-229 5   5562 METROPCS, INC. 552   2009-06-16   
214-229 6   5562 METROPCS, INC. 552   2009-06-16   
214-229 7   5562 METROPCS, INC. 552   2009-07-04   
214-229 8   5562 METROPCS, INC. 552   2003-09-30   
214-229 9   5562 METROPCS, INC. 552   2009-07-04   
214-231 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
214-234 A DLLSTXEMDS0  9533 SOUTHWESTERN BELL 552      
214-234 0   9533 SOUTHWESTERN BELL 552      
214-234 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2003-05-19   
214-234 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2003-05-19   
214-234 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2003-05-19   
214-234 4   9533 SOUTHWESTERN BELL 552      
214-234 5   5562 METROPCS, INC. 552   2004-10-28   
214-234 6   5562 METROPCS, INC. 552   2005-01-28   
214-234 7   9533 SOUTHWESTERN BELL 552      
214-234 8   903C ONVOY, LLC - TX 552   2005-01-15   
214-234 9   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2004-09-02   
214-237 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
214-238 A DLLSTX97DSV  184H T2 COMMUNICATIONS L.L.C. - TX 552      
214-238 0   793K TWC IP ENABLED SERVICES, LLC 552   2014-10-18   
214-238 1   184H T2 COMMUNICATIONS L.L.C. - TX 552   2014-03-08   
214-238 2   516C AT&T CORP. 552   2014-09-29   
214-238 3   516C AT&T CORP. 552   2014-09-29   

<< 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.