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 |
|---|---|---|---|---|---|---|---|
| 2003-05-02 | 573-421-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEXTER | MO |
| 2003-05-02 | 573-475-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SIKESTON | MO |
| 2003-04-30 | 573-219-3XXX | 3000–3999 | Assigned | BRIGHTSPEED OF MISSOURI, LLC | 9784 | COLUMBIA | MO |
| 2003-04-30 | 573-219-4XXX | 4000–4999 | Assigned | BRIGHTSPEED OF MISSOURI, LLC | 9784 | COLUMBIA | MO |
| 2003-04-30 | 573-219-5XXX | 5000–5999 | Assigned | BRIGHTSPEED OF MISSOURI, LLC | 9784 | COLUMBIA | MO |
| 2003-04-22 | 573-301-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JEFFERSNCY | MO |
| 2003-04-17 | 573-202-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ROLLA | MO |
| 2003-04-17 | 573-202-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ROLLA | MO |
| 2003-04-09 | 573-300-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | POPLAR BLF | MO |
| 2003-04-07 | 573-574-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 6123 | MONTGORYCY | MO |
| 2003-04-03 | 573-682-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2003-04-03 | 573-682-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2003-04-03 | 573-682-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2003-03-31 | 573-200-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CAPEGIRARD | MO |
| 2003-03-31 | 573-567-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | MEXICO | MO |
| 2003-03-31 | 573-727-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | POPLAR BLF | MO |
| 2003-03-31 | 573-746-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LKOZKOSBCH | MO |
| 2003-03-31 | 573-826-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | FULTON | MO |
| 2003-03-12 | 573-747-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FARMINGTON | MO |
| 2003-02-07 | 573-208-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | MARBLEHILL | MO |
| 2003-02-07 | 573-453-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | SALEM | MO |
| 2003-02-05 | 573-326-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | MARSTON | MO |
| 2003-01-21 | 573-217-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | CAMPBELL | MO |
| 2003-01-21 | 573-233-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | CHARLESTON | MO |
| 2003-01-21 | 573-281-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | MALDEN | MO |
| 2003-01-21 | 573-321-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ADVANCE | MO |
| 2003-01-21 | 573-352-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | POCAHONTAS | MO |
| 2002-11-18 | 573-381-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | CAPEGIRARD | MO |
| 2002-11-18 | 573-458-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ROLLA | MO |
| 2002-11-04 | 573-200-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CAPEGIRARD | MO |
| 2002-11-04 | 573-200-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CAPEGIRARD | MO |
| 2002-09-04 | 573-426-4XXX | 4000–4999 | Assigned | FIDELITY CABLEVISION, LLC | 3275 | ROLLA | MO |
| 2002-06-19 | 573-433-2XXX | 2000–2999 | Assigned | FIDELITY CABLEVISION, LLC | 3275 | WAYNESVL | MO |
| 2002-06-18 | 573-234-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2002-06-18 | 573-451-2XXX | 2000–2999 | Assigned | FIDELITY CABLEVISION, LLC | 3275 | ST ROBERT | MO |
| 2002-06-18 | 573-452-2XXX | 2000–2999 | Assigned | FIDELITY CABLEVISION, LLC | 3275 | FTLENARDWD | MO |
| 2002-06-18 | 573-453-2XXX | 2000–2999 | Assigned | FIDELITY CABLEVISION, LLC | 3275 | SALEM | MO |
| 2002-06-18 | 573-456-2XXX | 2000–2999 | Assigned | FIDELITY CABLEVISION, LLC | 3275 | NEWBURG | MO |
| 2002-06-18 | 573-460-2XXX | 2000–2999 | Assigned | FIDELITY CABLEVISION, LLC | 3275 | RICHLAND | MO |
| 2002-06-14 | 573-298-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | JEFFERSNCY | MO |
| 2002-06-05 | 573-433-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | WAYNESVL | MO |
| 2002-05-14 | 573-747-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | FARMINGTON | MO |
| 2002-05-09 | 573-557-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ELDON | MO |
| 2002-05-09 | 573-559-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | KENNETT | MO |
| 2002-05-09 | 573-560-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LOUISIANA | MO |
| 2002-05-08 | 573-837-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CAPEGIRARD | 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.