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 |
|---|---|---|---|---|---|---|---|
| 2016-01-11 | 385-881-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SALT LAKE | UT |
| 2016-01-08 | 385-388-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MURRAY | UT |
| 2016-01-08 | 385-388-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MURRAY | UT |
| 2016-01-08 | 385-415-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2016-01-08 | 385-415-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2016-01-05 | 385-389-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | OGDEN | UT |
| 2015-12-30 | 385-250-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | PROVO | UT |
| 2015-12-30 | 385-250-1XXX | 1000–1999 | Assigned | ONVOY, LLC - UT | 871E | PROVO | UT |
| 2015-12-30 | 385-900-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | MIDVALE | UT |
| 2015-12-16 | 385-243-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | BOUNTIFUL | UT |
| 2015-12-15 | 385-257-3XXX | 3000–3999 | Assigned | ONVOY, LLC - UT | 871E | MURRAY | UT |
| 2015-12-14 | 385-630-4XXX | 4000–4999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-12-09 | 385-415-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | SALT LAKE | UT |
| 2015-12-09 | 385-415-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | SALT LAKE | UT |
| 2015-12-08 | 385-383-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLEARFIELD | UT |
| 2015-12-08 | 385-383-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLEARFIELD | UT |
| 2015-12-08 | 385-455-4XXX | 4000–4999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | LEHI | UT |
| 2015-12-08 | 385-455-5XXX | 5000–5999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | LEHI | UT |
| 2015-12-08 | 385-455-6XXX | 6000–6999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | LEHI | UT |
| 2015-12-08 | 385-707-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-12-08 | 385-707-1XXX | 1000–1999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-12-08 | 385-707-2XXX | 2000–2999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-12-03 | 385-415-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2015-12-03 | 385-770-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | SALT LAKE | UT |
| 2015-12-02 | 385-257-6XXX | 6000–6999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | MURRAY | UT |
| 2015-12-02 | 385-257-7XXX | 7000–7999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | MURRAY | UT |
| 2015-12-02 | 385-257-8XXX | 8000–8999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | MURRAY | UT |
| 2015-12-02 | 385-323-5XXX | 5000–5999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | PLEASATGRV | UT |
| 2015-12-02 | 385-415-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | SALT LAKE | UT |
| 2015-12-02 | 385-415-5XXX | 5000–5999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | SALT LAKE | UT |
| 2015-12-02 | 385-477-4XXX | 4000–4999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | PROVO | UT |
| 2015-12-02 | 385-477-5XXX | 5000–5999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | PROVO | UT |
| 2015-12-02 | 385-477-6XXX | 6000–6999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | PROVO | UT |
| 2015-12-02 | 385-557-5XXX | 5000–5999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | MIDVALE | UT |
| 2015-12-02 | 385-770-7XXX | 7000–7999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | SALT LAKE | UT |
| 2015-12-01 | 385-770-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SALT LAKE | UT |
| 2015-12-01 | 385-770-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SALT LAKE | UT |
| 2015-12-01 | 385-770-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SALT LAKE | UT |
| 2015-11-25 | 385-257-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | MURRAY | UT |
| 2015-11-25 | 385-257-1XXX | 1000–1999 | Assigned | ONVOY, LLC - UT | 871E | MURRAY | UT |
| 2015-11-25 | 385-298-1XXX | 1000–1999 | Assigned | ONVOY, LLC - UT | 871E | OGDEN | UT |
| 2015-11-25 | 385-298-4XXX | 4000–4999 | Assigned | ONVOY, LLC - UT | 871E | OGDEN | UT |
| 2015-11-25 | 385-415-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-11-25 | 385-415-1XXX | 1000–1999 | Assigned | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-11-24 | 385-243-2XXX | 2000–2999 | Assigned | ONVOY, LLC - UT | 871E | BOUNTIFUL | UT |
| 2015-11-24 | 385-243-3XXX | 3000–3999 | Assigned | ONVOY, LLC - UT | 871E | BOUNTIFUL | UT |
| 2015-11-24 | 385-449-3XXX | 3000–3999 | Assigned | ONVOY, LLC - UT | 871E | ALTA | UT |
| 2015-11-24 | 385-449-4XXX | 4000–4999 | Assigned | ONVOY, LLC - UT | 871E | ALTA | UT |
| 2015-11-24 | 385-557-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | MIDVALE | UT |
| 2015-11-20 | 385-247-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | MIDVALE | 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.