NumberResearchThousands-blocks in 346-713
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/21/2026
The ten 1,000-number thousand-blocks inside prefix 346-713 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 346 blocks
Most active assignees, all time — NPA 346
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-09-06 | 346-713-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SMITHERSLK | TX |
| 2025-02-13 | 346-713-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | SMITHERSLK | TX |
| 2023-06-15 | 346-713-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | SMITHERSLK | TX |
| 2023-06-15 | 346-713-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | SMITHERSLK | TX |
| 2025-04-07 | 346-713-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | SMITHERSLK | TX |
| 2025-04-07 | 346-713-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | SMITHERSLK | TX |
| 2024-09-17 | 346-713-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | SMITHERSLK | TX |
| 2025-11-04 | 346-713-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | SMITHERSLK | TX |
| 2023-12-10 | 346-713-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | SMITHERSLK | TX |
| 2023-12-10 | 346-713-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | SMITHERSLK | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.