NumberResearchRecent thousands-block assignments
0 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, all time — NPA 385
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-03-17 | 385-378-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MURRAY | UT |
| 2022-03-17 | 385-406-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SPANIHFORK | UT |
| 2022-03-17 | 385-481-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ALTA | UT |
| 2022-03-17 | 385-566-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | KAYSVILLE | UT |
| 2022-03-17 | 385-874-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | FARMINGTON | UT |
| 2022-03-16 | 385-410-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MORGAN | UT |
| 2022-03-16 | 385-461-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SALT LAKE | UT |
| 2022-03-16 | 385-464-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MIDVALE | UT |
| 2022-03-16 | 385-526-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CLEARFIELD | UT |
| 2022-03-16 | 385-595-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SPRINGVL | UT |
| 2022-03-16 | 385-644-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | BOUNTIFUL | UT |
| 2022-03-16 | 385-746-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LEHI | UT |
| 2022-03-16 | 385-832-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | AMERCNFORK | UT |
| 2022-03-16 | 385-853-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PLEASATGRV | UT |
| 2022-03-16 | 385-865-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | OGDEN | UT |
| 2022-03-16 | 385-899-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PAYSON | UT |
| 2021-04-30 | 385-392-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | 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.