NumberResearchRecent prefix assignments
369 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 314-777 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO | |
| 314-778 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LADUE | MO | |
| 314-779 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KIRKWOOD | MO | |
| 314-780 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-781 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-782 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MEHLVILLE | MO | |
| 314-783 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-785 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-786 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CREVECOEUR | MO | |
| 314-787 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-790 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LADUE | MO | |
| 314-791 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-792 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-795 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-799 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-800 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KIRKWOOD | MO | |
| 314-801 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-802 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-803 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-805 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-807 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-808 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-809 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-810 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MO | |
| 314-812 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-813 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-814 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-815 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MEHLVILLE | MO | |
| 314-817 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-819 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CREVECOEUR | MO | |
| 314-821 | SOUTHWESTERN BELL | 9533 | KIRKWOOD | MO | |
| 314-822 | SOUTHWESTERN BELL | 9533 | KIRKWOOD | MO | |
| 314-823 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-824 | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO | |
| 314-826 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-829 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-830 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-831 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-832 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-835 | SOUTHWESTERN BELL | 9533 | KIRKWOOD | MO | |
| 314-836 | AMERICAN MESSAGING SERVICES, LLC | 9748 | ST LOUIS | MO | |
| 314-837 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-838 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-839 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-841 | AMERICAN MESSAGING SERVICES, LLC | 9748 | ST LOUIS | MO | |
| 314-842 | SOUTHWESTERN BELL | 9533 | SAPPINGTON | MO | |
| 314-843 | SOUTHWESTERN BELL | 9533 | SAPPINGTON | MO | |
| 314-844 | SOUTHWESTERN BELL | 9533 | CREVECOEUR | MO | |
| 314-845 | SOUTHWESTERN BELL | 9533 | MEHLVILLE | MO |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.