NumberResearchRecent thousands-block assignments
16 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 385
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 |
|---|---|---|---|---|---|---|---|
| 2024-09-19 | 385-385-9XXX | 9000–9999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2024-09-18 | 385-564-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALT LAKE | UT |
| 2024-09-18 | 385-564-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALT LAKE | UT |
| 2024-09-18 | 385-564-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALT LAKE | UT |
| 2024-09-18 | 385-564-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALT LAKE | UT |
| 2024-09-18 | 385-564-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALT LAKE | UT |
| 2024-09-17 | 385-550-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOUNTIFUL | UT |
| 2024-09-06 | 385-553-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | MORGAN | UT |
| 2024-09-06 | 385-553-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | MORGAN | UT |
| 2024-09-04 | 385-584-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2024-09-04 | 385-584-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2024-09-04 | 385-584-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2024-09-04 | 385-584-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2024-08-30 | 385-589-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-30 | 385-589-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-30 | 385-589-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-30 | 385-589-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-29 | 385-588-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-29 | 385-588-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-29 | 385-588-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-29 | 385-588-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-29 | 385-588-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-29 | 385-588-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-08-28 | 385-426-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLEARFIELD | UT |
| 2024-08-13 | 385-516-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ALTA | UT |
| 2024-07-31 | 385-546-8XXX | 8000–8999 | Assigned | ONVOY, LLC - UT | 871E | PLEASATGRV | UT |
| 2024-07-30 | 385-588-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-07-30 | 385-588-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-07-30 | 385-588-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-07-30 | 385-588-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-07-29 | 385-378-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-07-29 | 385-580-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-07-25 | 385-316-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | FARMINGTON | UT |
| 2024-07-23 | 385-587-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SPNSFKCNYN | UT |
| 2024-07-19 | 385-586-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MIDVALE | UT |
| 2024-06-27 | 385-584-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SALT LAKE | UT |
| 2024-06-27 | 385-584-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SALT LAKE | UT |
| 2024-06-26 | 385-874-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FARMINGTON | UT |
| 2024-06-25 | 385-580-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-06-25 | 385-580-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-06-25 | 385-580-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-06-25 | 385-580-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-06-25 | 385-580-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-06-25 | 385-580-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-06-25 | 385-581-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | SALT LAKE | UT |
| 2024-06-21 | 385-558-5XXX | 5000–5999 | Assigned | ONVOY, LLC - UT | 871E | CLEARFIELD | UT |
| 2024-06-21 | 385-558-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | CLEARFIELD | UT |
| 2024-06-21 | 385-574-1XXX | 1000–1999 | Assigned | ONVOY, LLC - UT | 871E | LEHI | UT |
| 2024-06-18 | 385-581-2XXX | 2000–2999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2024-06-17 | 385-582-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | PROVO | UT |
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.