NumberResearchThousands-blocks in 318-596
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 318-596 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 318 blocks
Most active assignees, all time — NPA 318
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-12-29 | 318-596-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - LA | 3232 | GRAMBLING | LA |
| 2015-05-12 | 318-596-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | GRAMBLING | LA |
| — | 318-596-2XXX | 2000–2999 | Available | GRAMBLING | LA | ||
| 2006-12-08 | 318-596-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | GRAMBLING | LA |
| — | 318-596-4XXX | 4000–4999 | Available | GRAMBLING | LA | ||
| 2016-03-02 | 318-596-5XXX | 5000–5999 | Assigned | ONVOY, LLC - LA | 749E | GRAMBLING | LA |
| — | 318-596-6XXX | 6000–6999 | Available | GRAMBLING | LA | ||
| 2024-09-16 | 318-596-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GRAMBLING | LA |
| 2016-03-02 | 318-596-8XXX | 8000–8999 | Assigned | ONVOY, LLC - LA | 749E | GRAMBLING | LA |
| 2008-11-18 | 318-596-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | GRAMBLING | LA |
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.