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 937
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-02-12 | 937-796-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | FAIRBORN | OH |
| 2024-02-06 | 937-240-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BELLE CTR | OH |
| 2024-02-06 | 937-246-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | RAYMOND | OH |
| 2024-02-06 | 937-280-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | VANDALIA | OH |
| 2024-02-06 | 937-349-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MILFORDCTR | OH |
| 2024-02-06 | 937-354-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MT VICTORY | OH |
| 2024-02-06 | 937-368-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | FLTCHELENA | OH |
| 2024-02-06 | 937-468-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | RUSHSYLVAN | OH |
| 2024-02-06 | 937-539-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BELLEFNTAN | OH |
| 2024-02-06 | 937-560-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | MSBGWCRLTN | OH |
| 2024-02-06 | 937-589-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | HUNTSVILLE | OH |
| 2024-02-06 | 937-612-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | NO LEWISBG | OH |
| 2024-02-06 | 937-615-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | PIQUA | OH |
| 2024-02-06 | 937-633-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | RUSSELLSPT | OH |
| 2024-02-06 | 937-639-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | ANNA | OH |
| 2024-02-06 | 937-666-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | E LIBERTY | OH |
| 2024-02-06 | 937-695-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | WINCHESTER | OH |
| 2024-02-06 | 937-704-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | FRANKLIN | OH |
| 2024-02-06 | 937-706-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | SOCHARLETN | OH |
| 2024-02-06 | 937-721-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MAGNETCSPG | OH |
| 2024-02-06 | 937-745-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ROSEWOOD | OH |
| 2024-02-06 | 937-820-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | HILLSBORO | OH |
| 2024-02-06 | 937-851-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NEWCARLISL | OH |
| 2024-02-06 | 937-858-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BOTKINS | OH |
| 2024-02-06 | 937-862-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SPRING VLY | OH |
| 2024-02-06 | 937-883-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | SOUTHSOLON | OH |
| 2024-02-06 | 937-888-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | SO VIENNA | OH |
| 2024-02-06 | 937-905-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | WMANSFIELD | OH |
| 2024-02-06 | 937-924-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MARYSVILLE | OH |
| 2024-02-06 | 937-927-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | SUGRTRERDG | OH |
| 2024-02-06 | 937-934-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | JACKSONCTR | OH |
| 2024-02-06 | 937-946-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | XENIA | OH |
| 2024-02-06 | 937-948-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SIDNEY | OH |
| 2024-02-06 | 937-957-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | RIPLEY | OH |
| 2024-02-06 | 937-966-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | NO HAMPTON | OH |
| 2024-02-06 | 937-989-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | YORKCENTER | OH |
| 2024-01-30 | 937-310-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BELLBROOK | OH |
| 2024-01-30 | 937-766-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CEDARVILLE | OH |
| 2024-01-30 | 937-857-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CHRISTISBG | OH |
| 2024-01-30 | 937-871-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | DANVILLE | OH |
| 2024-01-30 | 937-936-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BOWERSVLLE | OH |
| 2021-02-17 | 937-793-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DAYTON | OH |
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.