NumberResearchRecent thousands-block assignments
9 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 515
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 |
|---|---|---|---|---|---|---|---|
| 2021-10-05 | 515-655-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DES MOINES | IA |
| 2021-10-05 | 515-655-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DES MOINES | IA |
| 2021-10-05 | 515-655-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DES MOINES | IA |
| 2021-10-05 | 515-900-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOONE | IA |
| 2021-10-05 | 515-900-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOONE | IA |
| 2021-09-30 | 515-328-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | RANDALL | IA |
| 2021-09-30 | 515-355-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | WILLIAMS | IA |
| 2021-09-30 | 515-477-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | SWEA CITY | IA |
| 2021-09-30 | 515-550-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | BRADGATE | IA |
| 2021-09-29 | 515-567-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2021-09-28 | 515-524-6XXX | 6000–6999 | Assigned | PREMIER COMMUNICATIONS, INC. - IA | 904D | WEBSTER CY | IA |
| 2021-09-28 | 515-766-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2021-09-28 | 515-815-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2021-09-28 | 515-815-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2021-09-22 | 515-335-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | STORY CITY | IA |
| 2021-08-11 | 515-272-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | SWEA CITY | IA |
| 2021-08-11 | 515-328-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | RANDALL | IA |
| 2021-08-11 | 515-335-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | STORY CITY | IA |
| 2021-08-11 | 515-364-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | GOLDFIELD | IA |
| 2021-08-11 | 515-685-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | SLATER | IA |
| 2021-08-10 | 515-215-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | NEVADA | IA |
| 2021-08-10 | 515-215-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | NEVADA | IA |
| 2021-08-06 | 515-349-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | DALLAS CTR | IA |
| 2021-08-06 | 515-383-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | CAMBRIDGE | IA |
| 2021-08-06 | 515-506-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | ADEL | IA |
| 2021-08-06 | 515-506-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | ADEL | IA |
| 2021-08-06 | 515-550-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | BRADGATE | IA |
| 2021-08-06 | 515-646-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | LEDYARD | IA |
| 2021-08-06 | 515-775-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | GRAND JCT | IA |
| 2021-08-06 | 515-946-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | ELKHART | IA |
| 2021-08-04 | 515-666-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DES MOINES | IA |
| 2021-07-29 | 515-474-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WINTERSET | IA |
| 2021-07-07 | 515-341-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | ALGONA | IA |
| 2021-06-24 | 515-654-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | WEBSTER CY | IA |
| 2021-06-24 | 515-775-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | GRAND JCT | IA |
| 2021-06-21 | 515-315-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BLAIRSBURG | IA |
| 2021-06-21 | 515-551-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLARION | IA |
| 2021-06-18 | 515-341-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ALGONA | IA |
| 2021-06-18 | 515-506-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ADEL | IA |
| 2021-06-18 | 515-815-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | AMES | IA |
| 2021-06-18 | 515-900-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOONE | IA |
| 2021-06-03 | 515-666-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DES MOINES | IA |
| 2021-05-20 | 515-456-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BANCROFT | IA |
| 2021-05-16 | 515-355-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | WILLIAMS | IA |
| 2021-05-16 | 515-852-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | DOWS | IA |
| 2021-04-30 | 515-655-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DES MOINES | IA |
| 2021-04-26 | 515-513-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DES MOINES | IA |
| 2021-04-26 | 515-513-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DES MOINES | IA |
| 2021-04-14 | 515-349-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | DALLAS CTR | IA |
| 2021-04-14 | 515-417-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | FORT DODGE | 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.