NumberResearchThousands-blocks in 323-334
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/21/2026
The ten 1,000-number thousand-blocks inside prefix 323-334 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 323 blocks
Most active assignees, all time — NPA 323
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2011-04-25 | 323-334-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 11 | CA |
| 2018-11-30 | 323-334-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 11 | CA |
| — | 323-334-2XXX | 2000–2999 | Reserved | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 11 | CA |
| — | 323-334-3XXX | 3000–3999 | Reserved | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 11 | CA |
| — | 323-334-4XXX | 4000–4999 | Reserved | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 11 | CA |
| 2003-12-30 | 323-334-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2004-11-24 | 323-334-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2004-12-20 | 323-334-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2006-04-11 | 323-334-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 11 | CA |
| — | 323-334-9XXX | 9000–9999 | Reserved | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 11 | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.