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 |
|---|---|---|---|---|---|---|---|
| 2018-06-29 | 563-270-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | CENTER JCT | IA |
| 2018-06-29 | 563-273-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ONSLOW | IA |
| 2018-06-29 | 563-274-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | OTTERCREEK | IA |
| 2018-06-28 | 563-313-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | CRESCO | IA |
| 2018-06-28 | 563-331-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | TIPTON | IA |
| 2018-06-25 | 563-308-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | PRESTON | IA |
| 2018-06-25 | 563-454-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | WYOMING | IA |
| 2018-06-25 | 563-486-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | OXFORD JCT | IA |
| 2018-06-25 | 563-934-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | MILES | IA |
| 2018-06-20 | 563-227-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | DUBUQUE | IA |
| 2018-06-20 | 563-232-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | DAVENPORT | IA |
| 2018-06-19 | 563-204-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | LANSING | IA |
| 2018-06-19 | 563-292-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | WEST UNION | IA |
| 2018-06-19 | 563-794-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | WAUKON | IA |
| 2018-06-19 | 563-800-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CALMAR | IA |
| 2018-06-18 | 563-822-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | MANCHESTER | IA |
| 2018-06-15 | 563-227-1XXX | 1000–1999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | DUBUQUE | IA |
| 2018-06-08 | 563-334-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | DECORAH | IA |
| 2018-06-06 | 563-200-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | DAVENPORT | IA |
| 2018-06-06 | 563-200-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | DAVENPORT | IA |
| 2018-06-06 | 563-235-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DUBUQUE | IA |
| 2018-06-06 | 563-261-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | MUSCATINE | IA |
| 2018-06-06 | 563-503-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | CLINTON | IA |
| 2018-06-06 | 563-526-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | DAVENPORT | IA |
| 2018-06-06 | 563-744-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | FARLEY | IA |
| 2018-04-19 | 563-334-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | DECORAH | IA |
| 2018-04-19 | 563-334-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | DECORAH | IA |
| 2018-04-09 | 563-396-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2018-03-27 | 563-200-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2018-03-27 | 563-200-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2018-03-27 | 563-468-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2018-03-27 | 563-549-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2018-03-20 | 563-204-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | LANSING | IA |
| 2018-03-20 | 563-794-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | WAUKON | IA |
| 2018-03-19 | 563-396-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2018-03-19 | 563-396-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2018-03-19 | 563-396-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2018-03-19 | 563-396-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2018-03-19 | 563-396-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2018-03-14 | 563-235-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DUBUQUE | IA |
| 2018-03-14 | 563-239-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DUBUQUE | IA |
| 2018-03-14 | 563-334-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | DECORAH | IA |
| 2018-03-13 | 563-331-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | TIPTON | IA |
| 2018-03-13 | 563-331-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | TIPTON | IA |
| 2018-03-07 | 563-313-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESCO | IA |
| 2018-03-07 | 563-313-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESCO | IA |
| 2018-03-07 | 563-822-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | MANCHESTER | IA |
| 2018-03-07 | 563-822-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MANCHESTER | IA |
| 2018-03-06 | 563-206-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CLINTON | IA |
| 2018-03-06 | 563-206-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CLINTON | 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.