NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 860
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-06-25 | 860-847-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WINDSOR | CT |
| 2024-06-25 | 860-864-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | STORRS | CT |
| 2024-06-25 | 860-901-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | WINDSORLKS | CT |
| 2024-06-25 | 860-981-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | WATERTOWN | CT |
| 2024-06-24 | 860-323-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SIMSBURY | CT |
| 2024-06-24 | 860-410-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | PLAINVILLE | CT |
| 2024-06-24 | 860-717-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | NEWMILFORD | CT |
| 2024-06-24 | 860-876-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | OLD SAYBRK | CT |
| 2024-06-21 | 860-361-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LITCHFIELD | CT |
| 2024-06-14 | 860-699-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | LEDYARD | CT |
| 2024-06-11 | 860-359-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | COLUMBIA | CT |
| 2024-06-11 | 860-401-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DANIELSON | CT |
| 2022-07-15 | 860-845-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BRISTOL | CT |
| 2022-07-13 | 860-281-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MANCHESTER | CT |
| 2022-07-13 | 860-740-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MIDDLETOWN | CT |
| 2022-07-13 | 860-914-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NEWBRITAIN | CT |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.