NumberResearchRecent thousands-block assignments
1 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
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-24 | 563-516-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ELKADER | IA |
| 2026-03-03 | 563-223-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ELDRIDGE | IA |
| 2024-09-25 | 563-205-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DAVENPORT | IA |
| 2024-04-16 | 563-216-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DUBUQUE | IA |
| 2024-03-05 | 563-218-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | WILTON | IA |
| 2023-01-24 | 563-330-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | MONONA | IA |
| 2022-12-15 | 563-356-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | CHESTER | IA |
| 2022-12-15 | 563-605-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | POSTVILLE | IA |
| 2022-11-09 | 563-425-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | FAYETTE | IA |
| 2022-11-03 | 563-298-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | GUTTENBERG | IA |
| 2022-11-03 | 563-329-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | MCGREGOR | IA |
| 2022-10-05 | 563-900-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DAVENPORT | IA |
| 2022-01-26 | 563-351-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DURANT | IA |
| 2022-01-25 | 563-313-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | CRESCO | IA |
| 2021-04-05 | 563-666-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | WALCOTT | IA |
| 2020-10-08 | 563-893-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BENNETT | IA |
| 2018-08-10 | 563-221-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DE WITT | IA |
| 2018-06-29 | 563-236-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ANDREW | IA |
| 2018-06-29 | 563-240-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | LAMOTTE | IA |
| 2018-06-29 | 563-266-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BERNARD | IA |
| 2018-06-29 | 563-268-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BALDWIN | IA |
| 2018-06-29 | 563-269-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | CASCADE | IA |
| 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 |
| 2018-06-25 | 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 |
| 2017-08-31 | 563-214-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DAVENPORT | IA |
| 2017-05-10 | 563-482-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | LAWLER | IA |
| 2017-03-24 | 563-230-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DYERSVILLE | IA |
| 2017-03-24 | 563-363-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | MANCHESTER | IA |
| 2017-03-24 | 563-744-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | FARLEY | IA |
| 2017-03-24 | 563-853-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | LUXEMBURG | IA |
| 2017-03-24 | 563-855-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | WORTHINGTN | IA |
| 2017-03-24 | 563-856-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | COLESBURG | IA |
| 2017-03-24 | 563-870-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | HOLY CROSS | IA |
| 2017-03-24 | 563-876-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | EPWORTH | IA |
| 2017-03-24 | 563-921-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | NEW VIENNA | IA |
| 2017-03-24 | 563-922-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DELHI | IA |
| 2017-03-24 | 563-923-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | EARLVILLE | IA |
| 2017-03-24 | 563-925-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | GREELEY | IA |
| 2017-03-24 | 563-926-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | HOPKINTON | IA |
| 2017-03-24 | 563-932-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | RYAN | IA |
| 2017-02-24 | 563-687-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | SABULA | IA |
| 2017-02-24 | 563-872-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BELLEVUE | IA |
| 2016-12-28 | 563-239-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DUBUQUE | IA |
| 2016-09-13 | 563-649-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ATALISSA | IA |
| 2016-09-07 | 563-331-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | TIPTON | 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.