NumberResearchRecent thousands-block assignments
4 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 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 |
|---|---|---|---|---|---|---|---|
| 2023-07-13 | 641-277-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | OTTUMWA | IA |
| 2023-07-13 | 641-508-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | OSCEOLA | IA |
| 2023-07-13 | 641-516-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | MARSHALLTN | IA |
| 2023-07-13 | 641-516-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | MARSHALLTN | IA |
| 2023-07-13 | 641-516-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | MARSHALLTN | IA |
| 2023-07-13 | 641-516-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | MARSHALLTN | IA |
| 2023-07-13 | 641-516-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | MARSHALLTN | IA |
| 2023-07-13 | 641-821-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | GRINNELL | IA |
| 2023-07-05 | 641-671-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | LENOX | IA |
| 2023-06-27 | 641-508-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | OSCEOLA | IA |
| 2023-05-24 | 641-373-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | IOWA FALLS | IA |
| 2023-05-12 | 641-516-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MARSHALLTN | IA |
| 2023-05-11 | 641-302-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | RHODES | IA |
| 2023-04-27 | 641-229-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2023-04-07 | 641-210-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | MASON CITY | IA |
| 2023-03-31 | 641-916-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ST CHARLES | IA |
| 2023-03-28 | 641-923-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GARNER | IA |
| 2023-02-01 | 641-436-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | CENTERVL | IA |
| 2022-12-15 | 641-222-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BRITT | IA |
| 2022-12-15 | 641-250-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | MANLY | IA |
| 2022-12-15 | 641-254-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | NASHUA | IA |
| 2022-12-15 | 641-266-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ACKLEY | IA |
| 2022-12-15 | 641-334-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ROSE HILL | IA |
| 2022-11-07 | 641-671-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | LENOX | IA |
| 2022-10-20 | 641-448-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | MELCHER | IA |
| 2022-10-17 | 641-252-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DUMONT | IA |
| 2022-09-16 | 641-261-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | TOLEDO | IA |
| 2022-09-16 | 641-261-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | TOLEDO | IA |
| 2022-09-16 | 641-261-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | TOLEDO | IA |
| 2022-09-16 | 641-261-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TOLEDO | IA |
| 2022-09-06 | 641-205-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KNOXVILLE | IA |
| 2022-08-26 | 641-437-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CENTERVL | IA |
| 2022-08-11 | 641-575-6XXX | 6000–6999 | Assigned | MAHASKA COMMUNICATION GROUP, LLC - IA | 916A | OTTUMWA | IA |
| 2022-07-29 | 641-290-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MILO | IA |
| 2022-07-29 | 641-385-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | COLLINS | IA |
| 2022-07-29 | 641-417-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | NEWTON | IA |
| 2022-07-29 | 641-500-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | IOWA FALLS | IA |
| 2022-07-29 | 641-764-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MARTENSDL | IA |
| 2022-07-29 | 641-955-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MONROE | IA |
| 2022-07-28 | 641-268-1XXX | 1000–1999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | LACONA | IA |
| 2022-07-26 | 641-451-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | FAIRFIELD | IA |
| 2022-07-26 | 641-529-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CLEAR LAKE | IA |
| 2022-07-19 | 641-255-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | MASON CITY | IA |
| 2022-07-15 | 641-255-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | MASON CITY | IA |
| 2022-07-08 | 641-207-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | KEOTA | IA |
| 2022-06-28 | 641-208-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | BLOOMFIELD | IA |
| 2022-06-28 | 641-475-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | HAVERHILL | IA |
| 2022-06-28 | 641-476-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | LAUREL | IA |
| 2022-06-28 | 641-478-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | FERGUSON | IA |
| 2022-06-28 | 641-488-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | ALBION | 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.