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 |
|---|---|---|---|---|---|---|---|
| 2013-09-18 | 573-633-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | SHELBYVL | MO |
| 2013-09-18 | 573-672-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | STOUTSVL | MO |
| 2013-09-18 | 573-749-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | IRONDALE | MO |
| 2013-09-18 | 573-766-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BELGRADE | MO |
| 2013-09-18 | 573-779-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CALEDONIA | MO |
| 2013-09-18 | 573-842-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WAYNESVL | MO |
| 2013-09-18 | 573-994-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ANNAPOLIS | MO |
| 2013-09-17 | 573-245-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LEASBURG | MO |
| 2013-09-17 | 573-373-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LADDONIA | MO |
| 2013-09-17 | 573-425-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | HUNNEWELL | MO |
| 2013-09-17 | 573-490-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LEWISTOWN | MO |
| 2013-09-17 | 573-494-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | EWING | MO |
| 2013-09-17 | 573-565-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | PERRY | MO |
| 2013-09-17 | 573-652-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LA GRANGE | MO |
| 2013-09-17 | 573-671-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LICKING | MO |
| 2013-09-17 | 573-685-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | SANTA FE | MO |
| 2013-09-17 | 573-767-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MONTICELLO | MO |
| 2013-09-17 | 573-773-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PALMYRA | MO |
| 2013-09-17 | 573-928-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MONTAUK | MO |
| 2013-09-16 | 573-639-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | COLUMBIA | MO |
| 2013-09-16 | 573-639-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | COLUMBIA | MO |
| 2013-09-16 | 573-698-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ROCHEPORT | MO |
| 2013-09-13 | 573-305-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BIRCH TREE | MO |
| 2013-09-13 | 573-646-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BLAND | MO |
| 2013-09-13 | 573-668-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BOURBON | MO |
| 2013-09-13 | 573-677-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CUBA | MO |
| 2013-09-13 | 573-791-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | EDGAR SPG | MO |
| 2013-09-13 | 573-859-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BELLE | MO |
| 2013-09-12 | 573-544-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | FULTON | MO |
| 2013-08-22 | 573-554-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2013-08-15 | 573-412-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | PORTAGEVL | MO |
| 2013-08-13 | 573-975-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MEXICO | MO |
| 2013-08-07 | 573-207-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | GRAVOIS ML | MO |
| 2013-08-07 | 573-304-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CALIFORNIA | MO |
| 2013-08-07 | 573-395-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | TAOS | MO |
| 2013-08-07 | 573-477-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ST THOMAS | MO |
| 2013-08-06 | 573-488-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ASHLAND | MO |
| 2013-08-05 | 573-529-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | COLUMBIA | MO |
| 2013-08-02 | 573-803-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CAPEGIRARD | MO |
| 2013-07-30 | 573-294-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MORRISON | MO |
| 2013-07-30 | 573-496-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BRAZITO | MO |
| 2013-07-30 | 573-641-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CLARK | MO |
| 2013-07-30 | 573-693-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LKOZKOSBCH | MO |
| 2013-07-30 | 573-698-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ROCHEPORT | MO |
| 2013-07-30 | 573-763-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CHAMOIS | MO |
| 2013-07-30 | 573-933-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CENTRALIA | MO |
| 2013-07-30 | 573-943-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MTSTERLING | MO |
| 2013-07-24 | 573-475-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | SIKESTON | MO |
| 2013-07-16 | 573-953-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2013-07-16 | 573-953-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | 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.