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 347
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-05-06 | 347-205-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN05 | NY |
| 2020-05-06 | 347-473-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN06 | NY |
| 2013-12-25 | 347-690-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN09 | NY |
| 2013-12-25 | 347-817-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN06 | NY |
| 2013-12-25 | 347-896-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN15 | NY |
| 2013-12-25 | 347-937-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN15 | NY |
| 2013-12-03 | 347-892-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN04 | NY |
| 2013-07-30 | 347-434-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN11 | NY |
| 2013-07-30 | 347-897-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN13 | NY |
| 2012-05-07 | 347-696-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN11 | NY |
| 2012-03-09 | 347-897-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN13 | NY |
| 2010-07-06 | 347-704-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN11 | NY |
| 2010-07-06 | 347-704-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN11 | NY |
| 2010-07-06 | 347-704-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN11 | NY |
| 2008-08-18 | 347-338-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN05 | NY |
| 2007-05-17 | 347-844-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN06 | NY |
| 2006-12-19 | 347-466-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN14 | NY |
| 2005-12-09 | 347-289-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN07 | NY |
| 2005-09-14 | 347-753-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN10 | NY |
| 2003-07-16 | 347-934-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | NWYRCYZN14 | NY |
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.