NumberResearchRecent thousands-block assignments
16 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2026-01-27 | 563-222-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | MUSCATINE | IA |
| 2026-01-27 | 563-222-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | MUSCATINE | IA |
| 2026-01-27 | 563-222-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | MUSCATINE | IA |
| 2026-01-27 | 563-222-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | MUSCATINE | IA |
| 2026-01-27 | 563-222-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | MUSCATINE | IA |
| 2026-01-09 | 563-456-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DAVENPORT | IA |
| 2025-12-22 | 563-341-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DUBUQUE | IA |
| 2025-12-10 | 563-216-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DUBUQUE | IA |
| 2025-12-04 | 563-257-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2025-10-02 | 563-456-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2025-10-02 | 563-456-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2025-09-24 | 563-837-7XXX | 7000–7999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | FREDECKSBG | IA |
| 2025-09-22 | 563-444-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ATALISSA | IA |
| 2025-09-05 | 563-772-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CASCADE | IA |
| 2025-09-04 | 563-257-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2025-09-04 | 563-257-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2025-09-04 | 563-257-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2025-09-04 | 563-257-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2025-08-28 | 563-228-1XXX | 1000–1999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | BELLEVUE | IA |
| 2025-08-21 | 563-444-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | ATALISSA | IA |
| 2025-08-21 | 563-444-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | ATALISSA | IA |
| 2025-08-14 | 563-216-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DUBUQUE | IA |
| 2025-08-07 | 563-222-2XXX | 2000–2999 | Assigned | WIDE VOICE, LLC - IA | 722G | MUSCATINE | IA |
| 2025-08-07 | 563-772-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CASCADE | IA |
| 2025-07-29 | 563-257-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | DAVENPORT | IA |
| 2025-07-29 | 563-456-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | DAVENPORT | IA |
| 2025-07-22 | 563-208-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MUSCATINE | IA |
| 2025-07-22 | 563-215-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CLINTON | IA |
| 2025-07-22 | 563-294-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | WEST UNION | IA |
| 2025-07-22 | 563-348-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | DUBUQUE | IA |
| 2025-07-22 | 563-540-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WAUKON | IA |
| 2025-07-22 | 563-540-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | WAUKON | IA |
| 2025-07-22 | 563-550-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | CALMAR | IA |
| 2025-07-22 | 563-560-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LANSING | IA |
| 2025-07-22 | 563-644-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | DECORAH | IA |
| 2025-07-22 | 563-657-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | WALCOTT | IA |
| 2025-07-22 | 563-661-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | MAQUOKETA | IA |
| 2025-06-25 | 563-772-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CASCADE | IA |
| 2025-06-10 | 563-233-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUMNER | IA |
| 2025-05-23 | 563-551-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | DAVENPORT | IA |
| 2025-05-07 | 563-877-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EARLVILLE | IA |
| 2025-05-05 | 563-516-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ELKADER | IA |
| 2025-05-05 | 563-605-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | POSTVILLE | IA |
| 2025-05-05 | 563-927-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MANCHESTER | IA |
| 2025-05-02 | 563-220-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SABULA | IA |
| 2025-05-02 | 563-289-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LE CLAIRE | IA |
| 2025-05-02 | 563-446-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DELHI | IA |
| 2025-05-02 | 563-895-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DAVENPORT | IA |
| 2025-05-02 | 563-895-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DAVENPORT | IA |
| 2025-05-02 | 563-895-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DAVENPORT | IA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.