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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 314-588 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-589 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-590 | PAETEC ITEL, LLC | 829J | CREVECOEUR | MO | |
| 314-591 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-592 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-593 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LADUE | MO | |
| 314-594 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CREVECOEUR | MO | |
| 314-595 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-596 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | KIRKWOOD | MO | |
| 314-598 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LADUE | MO | |
| 314-599 | T-MOBILE USA, INC. | 6529 | ST LOUIS | MO | |
| 314-600 | T-MOBILE USA, INC. | 6529 | ST LOUIS | MO | |
| 314-601 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-602 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-603 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-604 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-605 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-606 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-607 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-608 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-609 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-610 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MO | |
| 314-612 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-613 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-614 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO | |
| 314-615 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-616 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO | |
| 314-619 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-620 | AT&T - LOCAL | 7421 | KIRKWOOD | MO | |
| 314-621 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-622 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-623 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-625 | ONVOY, LLC - MO | 093F | LADUE | MO | |
| 314-626 | BANDWIDTH.COM CLEC, LLC - MO | 993E | KIRKWOOD | MO | |
| 314-628 | SOUTHWESTERN BELL | 9533 | CREVECOEUR | MO | |
| 314-629 | T-MOBILE USA, INC. | 6529 | ST LOUIS | MO | |
| 314-630 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-631 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-632 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-633 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-635 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | SAPPINGTON | MO | |
| 314-637 | T-MOBILE USA, INC. | 6529 | LADUE | MO | |
| 314-638 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-640 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-641 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-642 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LADUE | MO | |
| 314-643 | T-MOBILE USA, INC. | 6529 | LADUE | MO | |
| 314-644 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-645 | SOUTHWESTERN BELL | 9533 | ST LOUIS | 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.