NumberResearchRecent thousands-block assignments
11 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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, last 30 days — NPA 573
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-05-31 | 573-746-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | LKOZKOSBCH | MO |
| 2017-05-30 | 573-987-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MO |
| 2017-05-30 | 573-987-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MO |
| 2017-05-22 | 573-604-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WINONA | MO |
| 2017-05-09 | 573-607-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | COLUMBIA | MO |
| 2017-05-02 | 573-733-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | BELL CITY | MO |
| 2017-04-27 | 573-455-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | WESTPHALIA | MO |
| 2017-04-20 | 573-229-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | META | MO |
| 2017-04-20 | 573-405-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | VIENNA | MO |
| 2017-04-20 | 573-417-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | LINN | MO |
| 2017-04-20 | 573-502-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRAVOIS ML | MO |
| 2017-04-20 | 573-502-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRAVOIS ML | MO |
| 2017-04-20 | 573-728-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | ARGYLE | MO |
| 2017-04-20 | 573-744-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | FREEBURG | MO |
| 2017-04-11 | 573-803-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CAPEGIRARD | MO |
| 2017-04-10 | 573-937-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAYNESVL | MO |
| 2017-03-22 | 573-508-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TAOS | MO |
| 2017-03-22 | 573-508-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TAOS | MO |
| 2017-03-20 | 573-381-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | CAPEGIRARD | MO |
| 2017-03-20 | 573-413-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | POPLAR BLF | MO |
| 2017-03-20 | 573-713-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | FARMINGTON | MO |
| 2017-03-20 | 573-872-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | POPLAR BLF | MO |
| 2017-03-06 | 573-605-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | PERRYVILLE | MO |
| 2017-03-01 | 573-550-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | FULTON | MO |
| 2017-02-28 | 573-520-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | RUSSELLVL | MO |
| 2017-02-28 | 573-730-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CAPEGIRARD | MO |
| 2017-02-24 | 573-654-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CARDWELL | MO |
| 2017-02-24 | 573-654-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CARDWELL | MO |
| 2017-02-22 | 573-347-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CLIMAX SPG | MO |
| 2017-02-22 | 573-381-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CAPEGIRARD | MO |
| 2017-02-22 | 573-533-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CENTERTOWN | MO |
| 2017-02-22 | 573-615-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-22 | 573-615-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2017-02-21 | 573-410-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CAMDENTON | MO |
| 2017-02-15 | 573-851-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SALEM | MO |
| 2017-02-09 | 573-282-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | MARBLEHILL | MO |
| 2017-01-30 | 573-621-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SIKESTON | MO |
| 2017-01-30 | 573-838-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SIKESTON | MO |
| 2017-01-23 | 573-292-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2017-01-23 | 573-305-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2017-01-18 | 573-504-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | PUXICO | MO |
| 2017-01-18 | 573-802-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | RICHWOODS | MO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.