NumberResearchThousands-blocks in 330-348
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 330-348 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 330 blocks
Most active assignees, all time — NPA 330
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-01-09 | 330-348-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AURORA | OH |
| — | 330-348-1XXX | 1000–1999 | Reserved | T-MOBILE USA, INC. | 6529 | AURORA | OH |
| — | 330-348-2XXX | 2000–2999 | Available | AURORA | OH | ||
| — | 330-348-3XXX | 3000–3999 | Reserved | T-MOBILE USA, INC. | 6529 | AURORA | OH |
| — | 330-348-4XXX | 4000–4999 | Reserved | T-MOBILE USA, INC. | 6529 | AURORA | OH |
| 2014-02-26 | 330-348-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OH | 464C | AURORA | OH |
| — | 330-348-6XXX | 6000–6999 | Reserved | T-MOBILE USA, INC. | 6529 | AURORA | OH |
| — | 330-348-7XXX | 7000–7999 | Reserved | METROPCS, INC. | 5562 | AURORA | OH |
| 2013-07-05 | 330-348-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | AURORA | OH |
| — | 330-348-9XXX | 9000–9999 | Reserved | METROPCS, INC. | 5562 | AURORA | OH |
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.