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 |
|---|---|---|---|---|---|---|---|
| 2010-07-16 | 573-825-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | COLUMBIA | MO |
| 2010-07-15 | 573-777-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2010-07-14 | 573-340-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | WELLSVILLE | MO |
| 2010-07-14 | 573-340-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | WELLSVILLE | MO |
| 2010-07-13 | 573-590-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | FULTON | MO |
| 2010-07-12 | 573-612-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROLLA | MO |
| 2010-07-12 | 573-880-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STEGNVIEVE | MO |
| 2010-06-29 | 573-469-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | JEFFERSNCY | MO |
| 2010-06-29 | 573-990-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | MALDEN | MO |
| 2010-06-23 | 573-826-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | FULTON | MO |
| 2010-06-15 | 573-204-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | JACKSON | MO |
| 2010-06-09 | 573-222-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | PUXICO | MO |
| 2010-06-09 | 573-891-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | DEXTER | MO |
| 2010-06-09 | 573-895-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | BLOOMFIELD | MO |
| 2010-06-09 | 573-990-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MALDEN | MO |
| 2010-05-25 | 573-397-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | COLUMBIA | MO |
| 2010-05-06 | 573-836-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CAMDENTON | MO |
| 2010-05-06 | 573-887-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAFFEE | MO |
| 2010-05-04 | 573-933-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2010-05-03 | 573-303-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | COLUMBIA | MO |
| 2010-04-30 | 573-228-9XXX | 9000–9999 | Assigned | MCC TELEPHONY LLC | 593K | COLUMBIA | MO |
| 2010-04-14 | 573-486-6XXX | 6000–6999 | Assigned | MCC TELEPHONY LLC | 593K | HERMANN | MO |
| 2010-04-14 | 573-616-1XXX | 1000–1999 | Assigned | MCC TELEPHONY LLC | 593K | JEFFERSNCY | MO |
| 2010-04-01 | 573-560-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LOUISIANA | MO |
| 2010-03-22 | 573-719-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2010-03-09 | 573-356-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | COLUMBIA | MO |
| 2010-03-09 | 573-777-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2010-02-22 | 573-303-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | COLUMBIA | MO |
| 2010-02-22 | 573-741-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARBLEHILL | MO |
| 2010-02-19 | 573-337-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ST ROBERT | MO |
| 2010-02-17 | 573-337-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ST ROBERT | MO |
| 2010-02-16 | 573-454-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | FLAT RIVER | MO |
| 2010-02-16 | 573-922-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CARUTHRSVL | MO |
| 2010-02-10 | 573-621-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | SIKESTON | MO |
| 2010-02-05 | 573-664-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FARMINGTON | MO |
| 2010-02-01 | 573-238-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | MARBLEHILL | MO |
| 2010-01-28 | 573-228-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | COLUMBIA | MO |
| 2010-01-28 | 573-326-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | MARSTON | MO |
| 2010-01-28 | 573-415-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | JEFFERSNCY | MO |
| 2010-01-19 | 573-708-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | CAPEGIRARD | MO |
| 2010-01-14 | 573-919-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KENNETT | MO |
| 2010-01-08 | 573-303-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2010-01-08 | 573-990-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MALDEN | MO |
| 2009-12-28 | 573-303-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2009-12-15 | 573-836-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CAMDENTON | MO |
| 2009-12-14 | 573-955-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BISMARCK | MO |
| 2009-12-11 | 573-204-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | JACKSON | MO |
| 2009-12-10 | 573-388-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CAPEGIRARD | MO |
| 2009-12-07 | 573-789-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | VERSAILLES | MO |
| 2009-11-20 | 573-608-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | STEGNVIEVE | 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.