NumberResearchRecent thousands-block assignments
7 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 350
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 |
|---|---|---|---|---|---|---|---|
| 2024-05-14 | 350-750-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNRA MAIN | CA |
| 2024-05-14 | 350-900-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | TRACY | CA |
| 2024-05-14 | 350-900-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | TRACY | CA |
| 2024-05-14 | 350-960-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | WTFR MAIN | CA |
| 2024-05-09 | 350-600-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OAKDALE | CA |
| 2024-05-08 | 350-214-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VALLEY SPG | CA |
| 2024-04-22 | 350-355-5XXX | 5000–5999 | Assigned | VONAGE AMERICA LLC | 197D | STOCKTON | CA |
| 2024-04-09 | 350-220-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | MODESTO | CA |
| 2024-04-09 | 350-600-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | OAKDALE | CA |
| 2024-03-29 | 350-210-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | TUOLUMNE | CA |
| 2024-03-29 | 350-333-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | NEWMAN | CA |
| 2024-03-28 | 350-350-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2024-03-28 | 350-350-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2024-03-28 | 350-350-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2024-03-27 | 350-503-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MERCED | CA |
| 2024-03-27 | 350-503-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MERCED | CA |
| 2024-03-27 | 350-503-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MERCED | CA |
| 2024-03-27 | 350-503-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MERCED | CA |
| 2024-03-27 | 350-530-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | ESCALON | CA |
| 2024-03-18 | 350-220-1XXX | 1000–1999 | Assigned | NUSO, LLC | 732J | MODESTO | CA |
| 2024-03-18 | 350-220-2XXX | 2000–2999 | Assigned | NUSO, LLC | 732J | MODESTO | CA |
| 2024-03-14 | 350-219-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | STOCKTON | CA |
| 2024-03-14 | 350-219-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | STOCKTON | CA |
| 2024-03-14 | 350-219-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | STOCKTON | CA |
| 2024-03-14 | 350-220-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA |
| 2024-03-14 | 350-220-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA |
| 2024-03-13 | 350-217-6XXX | 6000–6999 | Assigned | NUSO, LLC | 732J | STOCKTON | CA |
| 2024-03-13 | 350-217-7XXX | 7000–7999 | Assigned | NUSO, LLC | 732J | STOCKTON | CA |
| 2024-03-06 | 350-216-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MODESTO | CA |
| 2024-03-06 | 350-216-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MODESTO | CA |
| 2024-03-06 | 350-216-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MODESTO | CA |
| 2024-03-06 | 350-218-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MANTECA | CA |
| 2024-03-06 | 350-218-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MANTECA | CA |
| 2024-03-05 | 350-216-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | MODESTO | CA |
| 2024-03-05 | 350-500-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | ATWATER | CA |
| 2024-03-05 | 350-500-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | ATWATER | CA |
| 2024-02-27 | 350-206-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TURLOCK | CA |
| 2024-02-27 | 350-600-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OAKDALE | CA |
| 2024-02-27 | 350-930-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TURLOCK | CA |
| 2024-02-26 | 350-216-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | MODESTO | CA |
| 2024-02-26 | 350-333-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | NEWMAN | CA |
| 2024-02-26 | 350-503-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | MERCED | CA |
| 2024-02-26 | 350-600-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OAKDALE | CA |
| 2024-02-13 | 350-218-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MANTECA | CA |
| 2024-02-13 | 350-218-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MANTECA | CA |
| 2024-02-13 | 350-218-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MANTECA | CA |
| 2024-02-09 | 350-200-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LODI | CA |
| 2024-02-09 | 350-200-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | LODI | CA |
| 2024-02-02 | 350-203-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | DOS PALOS | CA |
| 2024-02-02 | 350-900-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TRACY | CA |
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.