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 |
|---|---|---|---|---|---|
| 314-846 | SOUTHWESTERN BELL | 9533 | OAKVILLE | MO | |
| 314-848 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-849 | SOUTHWESTERN BELL | 9533 | SAPPINGTON | MO | |
| 314-851 | SOUTHWESTERN BELL | 9533 | CREVECOEUR | MO | |
| 314-852 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO | |
| 314-853 | T-MOBILE USA, INC. | 6529 | LADUE | MO | |
| 314-854 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-855 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-856 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KIRKWOOD | MO | |
| 314-862 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-863 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-865 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-867 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-868 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-869 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-870 | SPOK, INC. | 6630 | LADUE | MO | |
| 314-871 | AMERICAN MESSAGING SERVICES, LLC | 9748 | ST LOUIS | MO | |
| 314-872 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-873 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-874 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-877 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-878 | SOUTHWESTERN BELL | 9533 | CREVECOEUR | MO | |
| 314-879 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-880 | PAETEC ITEL, LLC | 829J | ST LOUIS | MO | |
| 314-881 | PAETEC ITEL, LLC | 829J | ST LOUIS | MO | |
| 314-882 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-885 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MEHLVILLE | MO | |
| 314-888 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LADUE | MO | |
| 314-889 | SOUTHWESTERN BELL | 9533 | ST LOUIS | MO | |
| 314-890 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-892 | SOUTHWESTERN BELL | 9533 | MEHLVILLE | MO | |
| 314-894 | SOUTHWESTERN BELL | 9533 | MEHLVILLE | MO | |
| 314-895 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-898 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-899 | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ST LOUIS | MO | |
| 314-902 | SPOK, INC. | 6630 | ST LOUIS | MO | |
| 314-903 | SPOK, INC. | 6630 | ST LOUIS | MO | |
| 314-905 | SPOK, INC. | 6630 | ST LOUIS | MO | |
| 314-908 | SPOK, INC. | 6630 | ST LOUIS | MO | |
| 314-909 | SOUTHWESTERN BELL | 9533 | KIRKWOOD | MO | |
| 314-910 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-911 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MO | |
| 314-913 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-914 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-915 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-917 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-918 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-919 | SOUTHWESTERN BELL | 9533 | LADUE | MO | |
| 314-920 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO | |
| 314-921 | SOUTHWESTERN BELL | 9533 | LADUE | 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.