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 |
|---|---|---|---|---|---|---|---|
| 2021-04-09 | 563-928-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | EDGEWOOD | IA |
| 2021-04-05 | 563-666-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | WALCOTT | IA |
| 2021-04-02 | 563-867-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | DAVENPORT | IA |
| 2021-04-01 | 563-306-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DAVENPORT | IA |
| 2021-03-29 | 563-287-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DECORAH | IA |
| 2021-03-29 | 563-294-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | WEST UNION | IA |
| 2021-03-29 | 563-294-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | WEST UNION | IA |
| 2021-03-29 | 563-363-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | MANCHESTER | IA |
| 2021-03-29 | 563-363-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | MANCHESTER | IA |
| 2021-03-29 | 563-600-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | LANSING | IA |
| 2021-03-29 | 563-600-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | LANSING | IA |
| 2021-03-29 | 563-800-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | CALMAR | IA |
| 2021-03-29 | 563-800-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | CALMAR | IA |
| 2021-03-29 | 563-895-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2021-03-29 | 563-925-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | GREELEY | IA |
| 2021-03-29 | 563-926-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | HOPKINTON | IA |
| 2021-03-29 | 563-932-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | RYAN | IA |
| 2021-03-15 | 563-291-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DUBUQUE | IA |
| 2021-03-12 | 563-294-1XXX | 1000–1999 | Assigned | AIRUS, INC - IA | 423H | WEST UNION | IA |
| 2021-03-04 | 563-578-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SUMNER | IA |
| 2021-02-28 | 563-269-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CASCADE | IA |
| 2021-02-28 | 563-425-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FAYETTE | IA |
| 2021-02-16 | 563-240-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAMOTTE | IA |
| 2021-02-16 | 563-268-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BALDWIN | IA |
| 2021-02-16 | 563-308-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PRESTON | IA |
| 2021-02-15 | 563-220-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | SABULA | IA |
| 2021-02-15 | 563-228-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | BELLEVUE | IA |
| 2021-02-15 | 563-228-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | BELLEVUE | IA |
| 2021-02-15 | 563-230-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | DYERSVILLE | IA |
| 2021-02-15 | 563-253-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | TIPTON | IA |
| 2021-02-15 | 563-276-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | WAUKON | IA |
| 2021-02-15 | 563-278-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | CLINTON | IA |
| 2021-02-15 | 563-283-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2021-02-15 | 563-283-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2021-02-15 | 563-283-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2021-02-15 | 563-287-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | DECORAH | IA |
| 2021-02-15 | 563-287-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | DECORAH | IA |
| 2021-02-15 | 563-291-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2021-02-15 | 563-291-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2021-02-15 | 563-291-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2021-02-15 | 563-291-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2021-02-15 | 563-363-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | MANCHESTER | IA |
| 2021-02-15 | 563-522-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | LOW MOOR | IA |
| 2021-02-15 | 563-551-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2021-02-15 | 563-551-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2021-02-15 | 563-551-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2021-02-15 | 563-551-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2021-02-15 | 563-551-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2021-02-15 | 563-600-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | LANSING | IA |
| 2021-02-15 | 563-600-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | LANSING | 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.