NumberResearchThousands-blocks in 319-591
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 319-591 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 319 blocks
Most active assignees, all time — NPA 319
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 |
|---|---|---|---|---|---|---|---|
| 2008-04-30 | 319-591-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WASHINGTON | IA |
| 2009-08-07 | 319-591-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WASHINGTON | IA |
| 2015-11-23 | 319-591-2XXX | 2000–2999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | WASHINGTON | IA |
| 2017-04-19 | 319-591-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WASHINGTON | IA |
| — | 319-591-4XXX | 4000–4999 | Available | WASHINGTON | IA | ||
| — | 319-591-5XXX | 5000–5999 | Available | WASHINGTON | IA | ||
| 2026-05-12 | 319-591-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WASHINGTON | IA |
| — | 319-591-7XXX | 7000–7999 | Available | WASHINGTON | IA | ||
| 2010-03-05 | 319-591-8XXX | 8000–8999 | Assigned | MCC TELEPHONY LLC | 593K | WASHINGTON | IA |
| 2025-05-07 | 319-591-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WASHINGTON | IA |
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.