NumberResearchRecent thousands-block assignments
12 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 319
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 |
|---|---|---|---|---|---|---|---|
| 2010-03-05 | 319-648-6XXX | 6000–6999 | Assigned | MCC TELEPHONY LLC | 593K | RIVERSIDE | IA |
| 2010-03-05 | 319-728-9XXX | 9000–9999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | COLUMBSJCT | IA |
| 2010-03-05 | 319-837-3XXX | 3000–3999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | WEST POINT | IA |
| 2010-03-04 | 319-208-1XXX | 1000–1999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | BURLINGTON | IA |
| 2010-03-04 | 319-246-1XXX | 1000–1999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | FT MADISON | IA |
| 2010-03-04 | 319-313-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | KEOKUK | IA |
| 2010-03-04 | 319-534-9XXX | 9000–9999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | DANVILLE | IA |
| 2010-03-04 | 319-868-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | MORNINGSUN | IA |
| 2010-02-12 | 319-214-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | VINTON | IA |
| 2010-02-12 | 319-435-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | COGGON | IA |
| 2010-02-12 | 319-462-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | ANAMOSA | IA |
| 2010-02-12 | 319-535-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | MT VERNON | IA |
| 2010-02-12 | 319-775-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | CEDAR RPDS | IA |
| 2010-02-12 | 319-849-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | CENTER PT | IA |
| 2010-02-09 | 319-572-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | BURLINGTON | IA |
| 2010-02-08 | 319-883-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WATERLOO | IA |
| 2009-11-18 | 319-483-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WAVERLY | IA |
| 2009-10-26 | 319-250-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | FT MADISON | IA |
| 2009-10-20 | 319-432-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CEDAR RPDS | IA |
| 2009-08-27 | 319-538-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CEDAR RPDS | IA |
| 2009-08-27 | 319-855-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | IOWA CITY | IA |
| 2009-08-07 | 319-591-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WASHINGTON | IA |
| 2009-08-05 | 319-432-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CEDAR RPDS | IA |
| 2009-07-30 | 319-693-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CEDAR RPDS | IA |
| 2009-07-30 | 319-693-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CEDAR RPDS | IA |
| 2009-07-15 | 319-332-1XXX | 1000–1999 | Assigned | INDEPENDENCE TELECOMMUNICATIONS UTILITY - IA | 649D | INDEPNDNCE | IA |
| 2009-07-10 | 319-481-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9631 | ANAMOSA | IA |
| 2009-07-06 | 319-693-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CEDAR RPDS | IA |
| 2009-06-09 | 319-432-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CEDAR RPDS | IA |
| 2009-05-28 | 319-432-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CEDAR RPDS | IA |
| 2009-04-24 | 319-432-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | CEDAR RPDS | IA |
| 2009-03-24 | 319-883-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WATERLOO | IA |
| 2009-03-05 | 319-242-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CEDARFALLS | IA |
| 2009-03-04 | 319-855-6XXX | 6000–6999 | Assigned | WINDSTREAM IT-COMM, LLC - IA | 938D | IOWA CITY | IA |
| 2009-03-03 | 319-242-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | CEDARFALLS | IA |
| 2009-03-03 | 319-427-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | WATERLOO | IA |
| 2009-03-03 | 319-855-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | IOWA CITY | IA |
| 2009-03-03 | 319-855-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | IOWA CITY | IA |
| 2009-03-03 | 319-930-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | IOWA CITY | IA |
| 2009-02-23 | 319-432-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CEDAR RPDS | IA |
| 2009-02-18 | 319-855-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | IOWA CITY | IA |
| 2009-01-21 | 319-670-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KEOKUK | IA |
| 2009-01-20 | 319-427-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WATERLOO | IA |
| 2008-12-18 | 319-720-1XXX | 1000–1999 | Assigned | WINDSTREAM IT-COMM, LLC - IA | 938D | CEDAR RPDS | IA |
| 2008-12-16 | 319-432-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CEDAR RPDS | IA |
| 2008-12-15 | 319-804-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | CEDAR RPDS | IA |
| 2008-12-08 | 319-491-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CEDAR RPDS | IA |
| 2008-12-05 | 319-654-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CEDAR RPDS | IA |
| 2008-11-26 | 319-855-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | IOWA CITY | IA |
| 2008-11-14 | 319-427-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WATERLOO | 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.