NumberResearchRecent thousands-block assignments
16 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 563
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 |
|---|---|---|---|---|---|---|---|
| 2025-03-21 | 563-254-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-254-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-254-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-254-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-256-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-256-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-256-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-256-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-21 | 563-256-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DE WITT | IA |
| 2025-03-20 | 563-329-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MCGREGOR | IA |
| 2025-03-20 | 563-540-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | WAUKON | IA |
| 2025-03-18 | 563-284-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WALCOTT | IA |
| 2025-03-18 | 563-518-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WEST UNION | IA |
| 2025-03-14 | 563-594-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2025-03-14 | 563-594-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2025-03-06 | 563-215-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLINTON | IA |
| 2025-03-06 | 563-517-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DECORAH | IA |
| 2025-02-20 | 563-929-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | MANCHESTER | IA |
| 2025-02-11 | 563-215-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLINTON | IA |
| 2025-02-05 | 563-201-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DYERSVILLE | IA |
| 2025-01-15 | 563-277-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DECORAH | IA |
| 2024-11-25 | 563-900-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2024-11-19 | 563-201-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DYERSVILLE | IA |
| 2024-11-19 | 563-220-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SABULA | IA |
| 2024-11-19 | 563-228-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BELLEVUE | IA |
| 2024-11-19 | 563-318-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | TIPTON | IA |
| 2024-11-19 | 563-351-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DURANT | IA |
| 2024-11-19 | 563-356-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHESTER | IA |
| 2024-11-19 | 563-465-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FARLEY | IA |
| 2024-11-19 | 563-478-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEW VIENNA | IA |
| 2024-11-19 | 563-522-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOW MOOR | IA |
| 2024-11-19 | 563-624-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EPWORTH | IA |
| 2024-11-19 | 563-635-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LE CLAIRE | IA |
| 2024-11-19 | 563-649-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ATALISSA | IA |
| 2024-11-19 | 563-674-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DELMAR | IA |
| 2024-11-19 | 563-677-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHARLOTTE | IA |
| 2024-11-19 | 563-724-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MOSCOW | IA |
| 2024-11-19 | 563-758-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WORTHINGTN | IA |
| 2024-11-19 | 563-766-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | COLESBURG | IA |
| 2024-11-19 | 563-842-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HOLY CROSS | IA |
| 2024-11-19 | 563-853-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LUXEMBURG | IA |
| 2024-11-19 | 563-877-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EARLVILLE | IA |
| 2024-11-19 | 563-893-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BENNETT | IA |
| 2024-11-19 | 563-944-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOWDEN | IA |
| 2024-11-19 | 563-945-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | STANWOOD | IA |
| 2024-11-19 | 563-946-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROCHESTER | IA |
| 2024-11-18 | 563-269-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CASCADE | IA |
| 2024-10-21 | 563-346-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DAVENPORT | IA |
| 2024-10-21 | 563-346-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DAVENPORT | IA |
| 2024-10-21 | 563-346-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DAVENPORT | IA |
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.