NumberResearchThousands-blocks in 314-475
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 314-475 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 314 blocks
Most active assignees, all time — NPA 314
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2011-08-16 | 314-475-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LADUE | MO |
| 2011-03-09 | 314-475-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2012-01-18 | 314-475-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | LADUE | MO |
| 2012-02-03 | 314-475-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LADUE | MO |
| 2011-08-16 | 314-475-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LADUE | MO |
| 2011-06-17 | 314-475-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LADUE | MO |
| 2011-09-09 | 314-475-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | LADUE | MO |
| 2011-09-09 | 314-475-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | LADUE | MO |
| 2011-10-06 | 314-475-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LADUE | MO |
| 2011-10-06 | 314-475-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LADUE | MO |
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.