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 |
|---|---|---|---|---|---|---|---|
| 2018-01-30 | 641-307-0XXX | 0000–0999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | GUTHRIECTR | IA |
| 2018-01-30 | 641-742-2XXX | 2000–2999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | ADAIR | IA |
| 2018-01-11 | 641-325-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | GRINNELL | IA |
| 2018-01-04 | 641-531-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | IOWA FALLS | IA |
| 2017-12-14 | 641-321-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MOUNT AYR | IA |
| 2017-12-14 | 641-666-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OSAGE | IA |
| 2017-12-12 | 641-321-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MOUNT AYR | IA |
| 2017-12-11 | 641-229-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWHAMPTON | IA |
| 2017-12-11 | 641-328-6XXX | 6000–6999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | MARSHALLTN | IA |
| 2017-12-11 | 641-747-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GUTHRIECTR | IA |
| 2017-12-06 | 641-631-1XXX | 1000–1999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | CHARLES CY | IA |
| 2017-12-06 | 641-631-2XXX | 2000–2999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | CHARLES CY | IA |
| 2017-12-06 | 641-631-3XXX | 3000–3999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | CHARLES CY | IA |
| 2017-12-06 | 641-631-4XXX | 4000–4999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | CHARLES CY | IA |
| 2017-12-06 | 641-631-5XXX | 5000–5999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | CHARLES CY | IA |
| 2017-12-06 | 641-666-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | OSAGE | IA |
| 2017-11-01 | 641-210-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | MASON CITY | IA |
| 2017-09-12 | 641-230-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PELLA | IA |
| 2017-09-12 | 641-903-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MASON CITY | IA |
| 2017-09-11 | 641-450-5XXX | 5000–5999 | Assigned | NORTHLAND COMMUNICATIONS, INC. - IA | 068H | MASON CITY | IA |
| 2017-08-22 | 641-435-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | NASHUA | IA |
| 2017-08-17 | 641-206-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OSCEOLA | IA |
| 2017-08-17 | 641-530-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | MASON CITY | IA |
| 2017-08-15 | 641-854-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARSHALLTN | IA |
| 2017-08-08 | 641-230-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PELLA | IA |
| 2017-07-20 | 641-505-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | MANLY | IA |
| 2017-07-07 | 641-428-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | MASON CITY | IA |
| 2017-06-30 | 641-531-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IOWA FALLS | IA |
| 2017-06-30 | 641-841-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | IA |
| 2017-06-30 | 641-854-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MARSHALLTN | IA |
| 2017-06-12 | 641-216-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CENTERVL | IA |
| 2017-06-12 | 641-217-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHARITON | IA |
| 2017-06-12 | 641-426-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHARLES CY | IA |
| 2017-06-07 | 641-346-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ARISPE | IA |
| 2017-06-07 | 641-364-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ALTA VISTA | IA |
| 2017-06-07 | 641-427-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BAGLEY | IA |
| 2017-06-07 | 641-444-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BELMOND | IA |
| 2017-06-07 | 641-785-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BENTON | IA |
| 2017-06-07 | 641-931-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ALBIA | IA |
| 2017-06-07 | 641-934-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BLADENSBG | IA |
| 2017-06-07 | 641-937-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AGENCY | IA |
| 2017-06-07 | 641-938-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BLAKESBURG | IA |
| 2017-06-07 | 641-943-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ATTICA | IA |
| 2017-05-24 | 641-323-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | NORTHWOOD | IA |
| 2017-05-15 | 641-326-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | MONA | IA |
| 2017-05-15 | 641-329-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | BAILEY | IA |
| 2017-04-24 | 641-217-2XXX | 2000–2999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | CHARITON | IA |
| 2017-04-19 | 641-298-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AMUND | IA |
| 2017-04-19 | 641-531-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IA | 8344 | IOWA FALLS | IA |
| 2017-04-11 | 641-416-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | PELLA | 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.