Local Calling Guide
Area code/prefix search
Dallas, TX
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 972-850
| A |
DLLATX37DS6 |
6114 LEVEL 3 COMMUNICATIONS, LLC - TX |
552 |
|
|
|
| 972-850
| 0 |
|
6114 LEVEL 3 COMMUNICATIONS, LLC - TX |
552 |
|
|
|
| 972-850
| 1 |
|
6114 LEVEL 3 COMMUNICATIONS, LLC - TX |
552 |
|
|
|
| 972-850
| 2 |
|
903C ONVOY, LLC - TX |
552 |
|
|
|
| 972-850
| 3 |
|
903C ONVOY, LLC - TX |
552 |
|
|
|
| 972-850
| 4 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-850
| 5 |
|
829J PAETEC ITEL, LLC |
552 |
|
2011-07-22 |
|
| 972-850
| 6 |
|
004F BANDWIDTH.COM CLEC, LLC - TX |
552 |
|
2010-11-21 |
|
| 972-850
| 7 |
|
903C ONVOY, LLC - TX |
552 |
|
2009-10-12 |
|
| 972-850
| 8 |
|
004F BANDWIDTH.COM CLEC, LLC - TX |
552 |
|
2010-11-21 |
|
| 972-850
| 9 |
|
516C AT&T CORP. |
552 |
|
2011-03-21 |
|
| 972-851
| A |
DLLSTXADDS0 |
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 0 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 1 |
|
624H ONVOY SPECTRUM, LLC |
552 |
|
2021-12-19 |
|
| 972-851
| 2 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 3 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 4 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 5 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 6 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 7 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 8 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-851
| 9 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-852
| A |
DLLSTXJFPS1 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
552 |
|
|
|
| 972-855
| A |
DLLSTXADDS0 |
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-855
| 0 |
|
5562 METROPCS, INC. |
552 |
|
2012-02-23 |
|
| 972-855
| 1 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-855
| 2 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-855
| 3 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-855
| 4 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-855
| 5 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-855
| 6 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-855
| 7 |
|
5562 METROPCS, INC. |
552 |
|
2012-02-23 |
|
| 972-855
| 8 |
|
004F BANDWIDTH.COM CLEC, LLC - TX |
552 |
|
2010-11-21 |
|
| 972-855
| 9 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-856
| A |
DLLSTXADDS0 |
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-856
| 0 |
|
6529 T-MOBILE USA, INC. |
552 |
|
2025-05-21 |
|
| 972-856
| 1 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-856
| 2 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-856
| 3 |
|
6529 T-MOBILE USA, INC. |
552 |
|
2025-05-21 |
|
| 972-856
| 4 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-856
| 5 |
|
6529 T-MOBILE USA, INC. |
552 |
|
2025-05-21 |
|
| 972-856
| 6 |
|
6529 T-MOBILE USA, INC. |
552 |
|
2025-05-21 |
|
| 972-856
| 7 |
|
6529 T-MOBILE USA, INC. |
552 |
|
2025-05-21 |
|
| 972-856
| 8 |
|
6529 T-MOBILE USA, INC. |
552 |
|
2025-05-21 |
|
| 972-856
| 9 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-857
| A |
DLLSTXFBRS2 |
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-858
| A |
DLLSTXADRS3 |
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-860
| A |
DLLSTXEMDS0 |
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-860
| 0 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
| 972-860
| 1 |
|
9533 SOUTHWESTERN BELL |
552 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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