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
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-04-13 | 515-435-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | ROLAND | IA |
| 2021-04-12 | 515-272-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | SWEA CITY | IA |
| 2021-04-12 | 515-328-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | RANDALL | IA |
| 2021-04-12 | 515-335-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | STORY CITY | IA |
| 2021-04-12 | 515-434-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | MCCALLSBG | IA |
| 2021-04-12 | 515-934-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | NEVADA | IA |
| 2021-04-07 | 515-646-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | LEDYARD | IA |
| 2021-04-07 | 515-946-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | ELKHART | IA |
| 2021-04-01 | 515-671-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DES MOINES | IA |
| 2021-03-29 | 515-738-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | GRAND JCT | IA |
| 2021-03-29 | 515-766-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | AMES | IA |
| 2021-03-29 | 515-766-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | AMES | IA |
| 2021-03-26 | 515-228-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | SLATER | IA |
| 2021-03-26 | 515-228-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | SLATER | IA |
| 2021-03-26 | 515-436-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | RIPPEY | IA |
| 2021-03-26 | 515-436-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | RIPPEY | IA |
| 2021-03-25 | 515-582-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | MADRID | IA |
| 2021-03-25 | 515-582-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | MADRID | IA |
| 2021-03-19 | 515-220-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | CAMBRIDGE | IA |
| 2021-03-19 | 515-220-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | CAMBRIDGE | IA |
| 2021-03-19 | 515-474-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | WINTERSET | IA |
| 2021-03-19 | 515-474-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | WINTERSET | IA |
| 2021-03-19 | 515-489-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | JEWELL | IA |
| 2021-03-19 | 515-489-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | JEWELL | IA |
| 2021-03-19 | 515-526-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | REDFIELD | IA |
| 2021-03-19 | 515-526-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | REDFIELD | IA |
| 2021-03-19 | 515-605-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | RENWICK | IA |
| 2021-03-19 | 515-605-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | RENWICK | IA |
| 2021-03-19 | 515-786-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | OTHO | IA |
| 2021-03-19 | 515-786-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | OTHO | IA |
| 2021-03-19 | 515-789-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DEXTER | IA |
| 2021-03-19 | 515-842-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | VAN METER | IA |
| 2021-03-19 | 515-842-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | VAN METER | IA |
| 2021-03-19 | 515-877-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | POLK CITY | IA |
| 2021-03-19 | 515-877-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | POLK CITY | IA |
| 2021-03-19 | 515-949-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | EAGLEGROVE | IA |
| 2021-03-19 | 515-949-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | EAGLEGROVE | IA |
| 2021-03-17 | 515-739-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WINTERSET | IA |
| 2021-03-04 | 515-859-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | ALDEN | IA |
| 2021-02-25 | 515-895-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2021-02-25 | 515-895-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2021-02-25 | 515-895-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2021-02-25 | 515-895-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2021-02-25 | 515-895-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2021-02-25 | 515-895-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | DES MOINES | IA |
| 2021-02-16 | 515-385-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLARION | IA |
| 2021-02-16 | 515-565-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | LIVERMORE | IA |
| 2021-02-16 | 515-565-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | LIVERMORE | IA |
| 2021-02-12 | 515-466-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | WHITTEMORE | IA |
| 2021-02-12 | 515-466-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | WHITTEMORE | 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.