NumberResearchRecent thousands-block assignments
11 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 |
|---|---|---|---|---|---|---|---|
| 2017-10-26 | 573-488-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ASHLAND | MO |
| 2017-10-19 | 573-550-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FULTON | MO |
| 2017-10-17 | 573-702-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BLOOMSDALE | MO |
| 2017-10-17 | 573-702-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BLOOMSDALE | MO |
| 2017-10-13 | 573-500-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | CAMPBELL | MO |
| 2017-10-13 | 573-600-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | HANNIBAL | MO |
| 2017-10-11 | 573-491-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | NEWBLOMFLD | MO |
| 2017-10-05 | 573-436-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | POTOSI | MO |
| 2017-09-27 | 573-533-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTERTOWN | MO |
| 2017-09-18 | 573-856-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | PATTERSON | MO |
| 2017-09-18 | 573-890-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | FULTON | MO |
| 2017-09-15 | 573-430-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FLAT RIVER | MO |
| 2017-09-15 | 573-430-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FLAT RIVER | MO |
| 2017-09-15 | 573-430-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FLAT RIVER | MO |
| 2017-08-30 | 573-232-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ST ROBERT | MO |
| 2017-08-29 | 573-773-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | PALMYRA | MO |
| 2017-08-29 | 573-859-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | BELLE | MO |
| 2017-08-11 | 573-607-9XXX | 9000–9999 | Assigned | MCC TELEPHONY LLC | 593K | COLUMBIA | 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 |
| 2017-07-12 | 573-410-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | CAMDENTON | MO |
| 2017-07-07 | 573-351-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | DONIPHAN | MO |
| 2017-07-07 | 573-354-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | OXLY | MO |
| 2017-07-07 | 573-534-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | BONNETERRE | MO |
| 2017-07-07 | 573-857-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | FAIRDEALNG | MO |
| 2017-07-05 | 573-524-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | MACKSCREEK | MO |
| 2017-06-29 | 573-282-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARBLEHILL | MO |
| 2017-06-29 | 573-643-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | MARSTON | MO |
| 2017-06-27 | 573-502-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | GRAVOIS ML | MO |
| 2017-06-26 | 573-965-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | VERSAILLES | MO |
| 2017-06-26 | 573-965-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | VERSAILLES | MO |
| 2017-06-20 | 573-432-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | IRONTON | MO |
| 2017-06-07 | 573-598-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ANNAPOLIS | MO |
| 2017-06-06 | 573-282-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | MARBLEHILL | MO |
| 2017-06-06 | 573-414-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | DEXTER | MO |
| 2017-06-06 | 573-416-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | FULTON | MO |
| 2017-06-06 | 573-577-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | HANNIBAL | MO |
| 2017-06-06 | 573-591-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | MEXICO | MO |
| 2017-06-06 | 573-838-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | SIKESTON | MO |
| 2017-06-06 | 573-901-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | MALDEN | MO |
| 2017-06-01 | 573-440-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | FREDERCKTN | MO |
| 2017-06-01 | 573-454-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | FLAT RIVER | MO |
| 2017-06-01 | 573-504-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 6123 | PUXICO | MO |
| 2017-06-01 | 573-551-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | KENNETT | MO |
| 2017-06-01 | 573-605-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | PERRYVILLE | MO |
| 2017-06-01 | 573-984-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | STEGNVIEVE | MO |
| 2017-05-31 | 573-284-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | VERSAILLES | MO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.