NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, all time — NPA 442
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-12-27 | 442-381-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | INDIO | CA |
| 2022-07-13 | 442-387-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SALTON | CA |
| 2022-07-13 | 442-387-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SALTON | CA |
| 2022-06-29 | 442-376-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ESCONDIDO | CA |
| 2022-06-29 | 442-376-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ESCONDIDO | CA |
| 2022-06-29 | 442-383-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | DSERTHTSPG | CA |
| 2022-06-29 | 442-383-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | DSERTHTSPG | CA |
| 2022-05-26 | 442-371-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PALMDESERT | CA |
| 2022-05-26 | 442-371-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PALMDESERT | CA |
| 2022-05-26 | 442-381-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | INDIO | CA |
| 2017-09-14 | 442-208-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CALIPATRIA | CA |
| 2017-08-15 | 442-285-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CALIFORNCY | CA |
| 2016-11-16 | 442-297-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | EL CENTRO | CA |
| 2015-10-30 | 442-347-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BARSTOW | CA |
| 2015-06-10 | 442-246-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MORONGOVLY | CA |
| 2015-06-10 | 442-321-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | HOMESTDVLY | CA |
| 2015-02-09 | 442-252-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CALEXICO | CA |
| 2013-02-22 | 442-666-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PALMDESERT | 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.