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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-220 7 FRSCTXBJPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 552      
972-220 8   903C ONVOY, LLC - TX 552      
972-220 9   903C ONVOY, LLC - TX 552      
972-222 A DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-224 A DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
972-225 A DLLSTXHUDS0  9533 SOUTHWESTERN BELL 552      
972-226 A DLLSTXSUDS0  9533 SOUTHWESTERN BELL 552      
972-227 A DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-228 A DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
972-231 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-232 A DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 0 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 1 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 2 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-232 3 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 4 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 5 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 6 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 7 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
972-232 8 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-232 9   903C ONVOY, LLC - TX 552      
972-233 A DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-234 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-235 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-238 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-239 A DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-241 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-243 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-246 A DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 0 DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 1 DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 2 DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 3 DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 4 DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 5 DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 6 DLLSTXRIXPZ  7421 AT&T - LOCAL 552      
972-246 7 DLLTTX01DMD  5562 METROPCS, INC. 552      
972-246 8 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
972-246 9 DLLTTX01DMD  5562 METROPCS, INC. 552      
972-247 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-248 A DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-250 A DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 A DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 0 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 1 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 2 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 3 DLLTTX01DMD  5562 METROPCS, INC. 552      
972-267 4 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 5 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 6 DLLTTX01DMD  5562 METROPCS, INC. 552      
972-267 7 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 8 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-267 9 DLLSTXREDS0  9533 SOUTHWESTERN BELL 552      
972-270 A DLLSTXNMDS0  9533 SOUTHWESTERN BELL 552      
972-275 A DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-275 0 DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-275 1 DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-275 2 DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-275 3 DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-275 4 DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-275 5 DLLSTXLNDS0  9533 SOUTHWESTERN BELL 552      
972-275 6 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
972-275 7 DLLSTXRNDS1  9533 SOUTHWESTERN BELL 552      
972-275 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-275 9 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
972-277 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 0 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 1 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
972-277 2 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 3 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 4 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 5 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 6 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 7 DLLTTX01DMD  5562 METROPCS, INC. 552      
972-277 8 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-277 9 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-279 A DLLSTXNMDS0  9533 SOUTHWESTERN BELL 552      
972-280 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 0 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 1 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 2 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 3 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 4 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 5 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 6 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 7 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
972-280 8 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-280 9 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-283 A DLLSTXDVDS0  9533 SOUTHWESTERN BELL 552      
972-284 A DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-284 0 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-284 1 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-284 2 DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-284 3 DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-284 4 DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-284 5   829J PAETEC ITEL, LLC 552      
972-284 6 DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-284 7 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-284 8 DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-284 9 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 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 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.