NumberResearchRecent thousands-block assignments
4 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 641
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 |
|---|---|---|---|---|---|---|---|
| 2013-11-19 | 641-223-4XXX | 4000–4999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | OSCEOLA | IA |
| 2013-11-06 | 641-638-9XXX | 9000–9999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | OSKALOOSA | IA |
| 2013-10-02 | 641-229-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2013-09-05 | 641-373-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | IOWA FALLS | IA |
| 2013-09-03 | 641-247-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | FONTANELLE | IA |
| 2013-09-03 | 641-758-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | MARSHALLTN | IA |
| 2013-08-23 | 641-451-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | FAIRFIELD | IA |
| 2013-08-23 | 641-530-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | MASON CITY | IA |
| 2013-08-09 | 641-954-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | OTTUMWA | IA |
| 2013-07-23 | 641-672-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | OSKALOOSA | IA |
| 2013-07-03 | 641-428-9XXX | 9000–9999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | MASON CITY | IA |
| 2013-05-29 | 641-243-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | MASON CITY | IA |
| 2013-05-20 | 641-450-0XXX | 0000–0999 | Assigned | NORTHLAND COMMUNICATIONS, INC. - IA | 068H | MASON CITY | IA |
| 2013-04-01 | 641-230-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IA | 8344 | PELLA | IA |
| 2013-03-05 | 641-435-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | NASHUA | IA |
| 2013-03-05 | 641-638-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | OSKALOOSA | IA |
| 2013-03-05 | 641-758-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | MARSHALLTN | IA |
| 2013-03-05 | 641-812-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | HAMPTON | IA |
| 2013-03-05 | 641-847-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | ACKLEY | IA |
| 2013-02-15 | 641-732-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | OSAGE | IA |
| 2013-01-22 | 641-758-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | MARSHALLTN | IA |
| 2013-01-10 | 641-352-3XXX | 3000–3999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | MARSHALLTN | IA |
| 2012-12-27 | 641-458-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | GENEVA | IA |
| 2012-12-27 | 641-552-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | CHARLES CY | IA |
| 2012-12-27 | 641-552-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | CHARLES CY | IA |
| 2012-12-27 | 641-863-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | BRITT | IA |
| 2012-12-27 | 641-863-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | BRITT | IA |
| 2012-12-27 | 641-924-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | GARNER | IA |
| 2012-12-27 | 641-924-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | GARNER | IA |
| 2012-12-21 | 641-218-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | KNOXVILLE | IA |
| 2012-11-15 | 641-243-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | MASON CITY | IA |
| 2012-11-15 | 641-243-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | MASON CITY | IA |
| 2012-11-15 | 641-243-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | MASON CITY | IA |
| 2012-11-15 | 641-243-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | MASON CITY | IA |
| 2012-11-15 | 641-316-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | IOWA FALLS | IA |
| 2012-11-15 | 641-316-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | IOWA FALLS | IA |
| 2012-11-15 | 641-316-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | IOWA FALLS | IA |
| 2012-11-15 | 641-390-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | NORTHWOOD | IA |
| 2012-11-15 | 641-390-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | NORTHWOOD | IA |
| 2012-11-15 | 641-390-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | NORTHWOOD | IA |
| 2012-11-15 | 641-426-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | CHARLES CY | IA |
| 2012-11-15 | 641-454-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | MANLY | IA |
| 2012-11-15 | 641-454-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | MANLY | IA |
| 2012-11-15 | 641-458-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | GENEVA | IA |
| 2012-11-15 | 641-458-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | GENEVA | IA |
| 2012-11-15 | 641-519-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | GARNER | IA |
| 2012-11-15 | 641-519-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | GARNER | IA |
| 2012-11-15 | 641-519-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | GARNER | IA |
| 2012-11-15 | 641-632-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | ROSE HILL | IA |
| 2012-11-15 | 641-632-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | ROSE HILL | 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.