NumberResearchThousands-blocks in 325-600
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 325-600 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 325 blocks
Most active assignees, all time — NPA 325
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 325-600-0XXX | 0000–0999 | Available | BROWNWOOD | TX | ||
| — | 325-600-1XXX | 1000–1999 | Available | BROWNWOOD | TX | ||
| — | 325-600-2XXX | 2000–2999 | Available | BROWNWOOD | TX | ||
| 2021-04-15 | 325-600-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | BROWNWOOD | TX |
| — | 325-600-4XXX | 4000–4999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BROWNWOOD | TX |
| — | 325-600-5XXX | 5000–5999 | Available | BROWNWOOD | TX | ||
| 2020-06-19 | 325-600-6XXX | 6000–6999 | Assigned | FRACTEL, LLC | 965H | BROWNWOOD | TX |
| 2016-06-02 | 325-600-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BROWNWOOD | TX |
| 2021-09-02 | 325-600-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BROWNWOOD | TX |
| — | 325-600-9XXX | 9000–9999 | Available | BROWNWOOD | TX |
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.