NumberResearchThousands-blocks in 319-245
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 319-245 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
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-07-17 | 319-245-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | GRUNDY CTR | IA |
| — | 319-245-1XXX | 1000–1999 | Available | GRUNDY CTR | IA | ||
| 2017-12-11 | 319-245-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GRUNDY CTR | IA |
| 2021-04-09 | 319-245-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | GRUNDY CTR | IA |
| — | 319-245-4XXX | 4000–4999 | Available | GRUNDY CTR | IA | ||
| 2018-05-01 | 319-245-5XXX | 5000–5999 | Assigned | INTEGRATED PATH COMMUNCATIONS, LLC - IA | 544H | GRUNDY CTR | IA |
| — | 319-245-6XXX | 6000–6999 | Available | GRUNDY CTR | IA | ||
| 2017-05-10 | 319-245-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | GRUNDY CTR | IA |
| — | 319-245-8XXX | 8000–8999 | Available | GRUNDY CTR | IA | ||
| 2015-06-29 | 319-245-9XXX | 9000–9999 | Assigned | WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | 1170 | GRUNDY CTR | IA |
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.