NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, all time — NPA 573
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-04-29 | 573-835-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | NEWFLORNCE | MO |
| 2026-04-02 | 573-437-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | OWENSVILLE | MO |
| 2025-02-19 | 573-917-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | DIXON | MO |
| 2024-04-16 | 573-540-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2023-09-20 | 573-970-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2023-08-23 | 573-816-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | SIKESTON | MO |
| 2023-05-17 | 573-351-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | DONIPHAN | MO |
| 2023-02-15 | 573-318-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CHAFFEE | MO |
| 2023-02-13 | 573-383-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CANTON | MO |
| 2023-02-13 | 573-515-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | SHELBINA | MO |
| 2022-12-27 | 573-731-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MONROECITY | MO |
| 2022-11-29 | 573-850-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | POPLAR BLF | MO |
| 2022-07-14 | 573-773-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | PALMYRA | MO |
| 2022-05-20 | 573-617-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | SULLIVAN | MO |
| 2021-12-01 | 573-357-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | PARMA | MO |
| 2021-11-01 | 573-687-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | STURGEON | MO |
| 2021-03-08 | 573-762-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | NEWBURG | MO |
| 2020-12-29 | 573-540-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2020-10-01 | 573-848-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | STEELE | MO |
| 2020-08-26 | 573-530-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2020-08-11 | 573-519-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CAPEGIRARD | MO |
| 2020-08-10 | 573-415-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | JEFFERSNCY | MO |
| 2020-07-15 | 573-899-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ST JAMES | MO |
| 2020-02-18 | 573-507-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2019-05-10 | 573-872-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | POPLAR BLF | MO |
| 2019-03-05 | 573-507-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2018-12-19 | 573-726-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BERNIE | MO |
| 2018-11-01 | 573-507-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2018-11-01 | 573-507-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2018-04-11 | 573-606-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | JEFFERSNCY | MO |
| 2018-03-28 | 573-409-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | HERMANN | MO |
| 2018-03-28 | 573-564-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MONTGORYCY | MO |
| 2018-03-27 | 573-607-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2018-01-31 | 573-388-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CAPEGIRARD | MO |
| 2017-11-03 | 573-597-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | AUXVASSE | MO |
| 2017-11-03 | 573-716-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | WILLIAMSBG | MO |
| 2017-11-03 | 573-809-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MOKANE | MO |
| 2017-11-03 | 573-839-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | RHINELAND | MO |
| 2017-11-03 | 573-912-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | HATTON | MO |
| 2017-11-03 | 573-977-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BIGSPRING | MO |
| 2017-11-02 | 573-506-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | TEBBETTS | MO |
| 2017-10-26 | 573-296-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | HALLSVILLE | MO |
| 2017-10-26 | 573-488-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ASHLAND | MO |
| 2017-10-11 | 573-491-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | NEWBLOMFLD | MO |
| 2017-08-30 | 573-232-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ST ROBERT | MO |
| 2017-08-10 | 573-361-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ESSEX | MO |
| 2017-08-10 | 573-371-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | HOLCOMB | MO |
| 2017-08-10 | 573-394-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | RISCO | MO |
| 2017-08-10 | 573-448-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | GIDEON | MO |
| 2017-08-03 | 573-836-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CAMDENTON | MO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.