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 |
|---|---|---|---|---|---|---|---|
| 2006-12-22 | 563-503-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | CLINTON | IA |
| 2006-11-30 | 563-676-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2006-11-06 | 563-676-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2006-10-12 | 563-499-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2006-10-09 | 563-676-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2006-10-04 | 563-663-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DUBUQUE | IA |
| 2006-09-19 | 563-663-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DUBUQUE | IA |
| 2006-09-13 | 563-607-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MUSCATINE | IA |
| 2006-09-11 | 563-676-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2006-08-31 | 563-272-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | MUSCATINE | IA |
| 2006-08-23 | 563-613-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LOW MOOR | IA |
| 2006-08-10 | 563-528-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2006-06-06 | 563-506-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | MUSCATINE | IA |
| 2006-06-05 | 563-528-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2006-03-07 | 563-499-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2006-02-09 | 563-219-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CLINTON | IA |
| 2006-02-09 | 563-219-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CLINTON | IA |
| 2006-02-06 | 563-663-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DUBUQUE | IA |
| 2005-12-14 | 563-564-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | DUBUQUE | IA |
| 2005-11-15 | 563-528-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAVENPORT | IA |
| 2005-11-01 | 563-676-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2005-10-13 | 563-659-6XXX | 6000–6999 | Assigned | GRAND MOUND COOPERATIVE TELEPHONE ASSOCIATION | 198D | DE WITT | IA |
| 2005-09-13 | 563-676-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2005-08-25 | 563-676-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2005-08-02 | 563-608-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MANCHESTER | IA |
| 2005-08-02 | 563-608-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MANCHESTER | IA |
| 2005-06-23 | 563-451-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | IA |
| 2005-06-23 | 563-451-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | IA |
| 2005-06-23 | 563-451-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | IA |
| 2005-06-23 | 563-451-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | IA |
| 2005-06-13 | 563-387-6XXX | 6000–6999 | Assigned | MCC TELEPHONY LLC | 593K | DECORAH | IA |
| 2005-06-01 | 563-499-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2005-06-01 | 563-499-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2005-05-10 | 563-506-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | MUSCATINE | IA |
| 2005-04-27 | 563-676-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2005-04-18 | 563-422-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WEST UNION | IA |
| 2005-04-18 | 563-422-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WEST UNION | IA |
| 2005-04-18 | 563-568-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WAUKON | IA |
| 2005-04-18 | 563-568-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WAUKON | IA |
| 2005-02-17 | 563-607-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MUSCATINE | IA |
| 2005-02-11 | 563-613-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LOW MOOR | IA |
| 2005-02-08 | 563-547-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESCO | IA |
| 2005-02-08 | 563-547-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESCO | IA |
| 2005-02-07 | 563-564-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DUBUQUE | IA |
| 2005-01-27 | 563-676-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2005-01-11 | 563-321-4XXX | 4000–4999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | CLINTON | IA |
| 2004-12-07 | 563-451-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | IA |
| 2004-12-07 | 563-451-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | IA |
| 2004-12-07 | 563-451-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | IA |
| 2004-12-07 | 563-451-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | DUBUQUE | 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.