NumberResearchThousands-blocks in 925-643
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 925-643 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 925 blocks
Most active assignees, all time — NPA 925
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-07-02 | 925-643-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | PSBG WEST | CA |
| 2021-09-15 | 925-643-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | PSBG WEST | CA |
| 2014-08-29 | 925-643-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | PSBG WEST | CA |
| 2018-07-06 | 925-643-3XXX | 3000–3999 | Assigned | INTEGRATED PATH COMMUNICATIONS, LLC - CA | 707H | PSBG WEST | CA |
| 2025-02-10 | 925-643-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PSBG WEST | CA |
| 2006-10-19 | 925-643-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PSBG WEST | CA |
| 2020-11-06 | 925-643-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | PSBG WEST | CA |
| 2014-12-31 | 925-643-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PSBG WEST | CA |
| 2020-11-06 | 925-643-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | PSBG WEST | CA |
| — | 925-643-9XXX | 9000–9999 | Reserved | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PSBG WEST | CA |
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.