NumberResearchRecent prefix assignments
371 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 214-875 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-876 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-877 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-878 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-879 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-880 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-882 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-883 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-886 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | IRVING | TX | |
| 214-887 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-889 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-890 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-891 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-893 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-895 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-900 | METROPCS, INC. | 5562 | DALLAS | TX | |
| 214-902 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-904 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-905 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-906 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-908 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-911 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 214-912 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-913 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-914 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-915 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-916 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-917 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-919 | ONVOY, LLC - TX | 903C | PLANO | TX | |
| 214-920 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-921 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | DALLAS | TX | |
| 214-922 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-923 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-924 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-926 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-928 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-929 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-932 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-936 | SOUTHWESTERN BELL | 9533 | XXXXXXXXXX | TX | |
| 214-939 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-941 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-942 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-943 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-944 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-946 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-947 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-948 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-949 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAXAHACHIE | TX | |
| 214-950 | TX | ||||
| 214-951 | SOUTHWESTERN BELL | 9533 | DALLAS | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.