NumberResearchRecent thousands-block assignments
9 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 515
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 |
|---|---|---|---|---|---|---|---|
| 2025-07-22 | 515-405-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | RENWICK | IA |
| 2025-07-22 | 515-466-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | WHITTEMORE | IA |
| 2025-07-22 | 515-489-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | JEWELL | IA |
| 2025-07-22 | 515-517-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | EARLHAM | IA |
| 2025-07-22 | 515-524-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WEBSTER CY | IA |
| 2025-07-22 | 515-529-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | COLFAX | IA |
| 2025-07-22 | 515-534-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | STUART | IA |
| 2025-07-22 | 515-550-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BRADGATE | IA |
| 2025-07-22 | 515-565-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | LIVERMORE | IA |
| 2025-07-22 | 515-588-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | EAGLEGROVE | IA |
| 2025-07-22 | 515-600-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | LUVERNE | IA |
| 2025-07-22 | 515-622-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GILMORE CY | IA |
| 2025-07-22 | 515-626-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | BOONE | IA |
| 2025-07-22 | 515-642-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PERRY | IA |
| 2025-07-22 | 515-716-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PRAIRIE CY | IA |
| 2025-07-22 | 515-722-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | RUNNELLS | IA |
| 2025-07-22 | 515-755-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WESLEY | IA |
| 2025-07-22 | 515-784-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | DAWSON | IA |
| 2025-07-22 | 515-842-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | VAN METER | IA |
| 2025-07-22 | 515-849-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | HUMBOLDT | IA |
| 2025-07-22 | 515-877-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | POLK CITY | IA |
| 2025-07-22 | 515-915-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | GRANGER | IA |
| 2025-07-03 | 515-912-7XXX | 7000–7999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | INDIANOLA | IA |
| 2025-06-25 | 515-694-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2025-06-25 | 515-694-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2025-05-09 | 515-841-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WINTERSET | IA |
| 2025-05-07 | 515-589-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WOODWARD | IA |
| 2025-05-07 | 515-694-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AMES | IA |
| 2025-05-07 | 515-870-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SWEA CITY | IA |
| 2025-05-07 | 515-888-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | BOONE | IA |
| 2025-05-07 | 515-934-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEVADA | IA |
| 2025-05-07 | 515-944-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WEST BEND | IA |
| 2025-05-02 | 515-775-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GRAND JCT | IA |
| 2025-04-29 | 515-370-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JEFFERSON | IA |
| 2025-04-29 | 515-538-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LAKOTA | IA |
| 2025-04-28 | 515-837-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BARNUM | IA |
| 2025-04-28 | 515-897-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DES MOINES | IA |
| 2025-04-21 | 515-347-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | ADEL | IA |
| 2025-04-21 | 515-691-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEVADA | IA |
| 2025-04-21 | 515-849-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBOLDT | IA |
| 2025-04-21 | 515-849-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBOLDT | IA |
| 2025-04-10 | 515-655-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2025-04-10 | 515-655-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2025-04-10 | 515-957-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DES MOINES | IA |
| 2025-03-27 | 515-565-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | LIVERMORE | IA |
| 2025-03-24 | 515-902-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | HUMBOLDT | IA |
| 2025-03-21 | 515-257-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DES MOINES | IA |
| 2025-03-21 | 515-304-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DES MOINES | IA |
| 2025-03-21 | 515-363-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DES MOINES | IA |
| 2025-03-21 | 515-363-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DES MOINES | 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.