NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 435
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 |
|---|---|---|---|---|---|---|---|
| 2024-10-09 | 435-732-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | TREMONTON | UT |
| 2024-09-27 | 435-348-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | FILLMORE | UT |
| 2024-04-08 | 435-477-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | PAROWAN | UT |
| 2023-10-04 | 435-276-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BLANDING | UT |
| 2023-07-06 | 435-296-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | GLNCNYONCY | UT |
| 2023-06-16 | 435-348-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | FILLMORE | UT |
| 2023-06-01 | 435-270-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | BLANDING | UT |
| 2023-05-15 | 435-281-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | WASATCH | UT |
| 2022-12-27 | 435-737-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | TOOELE | UT |
| 2022-08-29 | 435-276-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | BLANDING | UT |
| 2022-05-11 | 435-274-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | TOOELE | UT |
| 2022-04-08 | 435-732-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | TREMONTON | UT |
| 2022-04-04 | 435-270-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | BLANDING | UT |
| 2022-04-04 | 435-348-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | FILLMORE | UT |
| 2022-02-28 | 435-567-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | RICHFIELD | UT |
| 2022-02-28 | 435-569-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | MOAB | UT |
| 2021-11-01 | 435-274-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | TOOELE | UT |
| 2021-04-29 | 435-309-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | GLNCNYONCY | UT |
| 2021-02-22 | 435-281-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | WASATCH | UT |
| 2021-02-22 | 435-523-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | ST GEORGE | UT |
| 2021-02-22 | 435-625-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BEAVER | UT |
| 2021-02-09 | 435-274-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | TOOELE | UT |
| 2021-02-09 | 435-289-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | RICHFIELD | UT |
| 2021-02-09 | 435-592-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | CEDAR CITY | UT |
| 2021-01-21 | 435-534-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | LOGAN | UT |
| 2021-01-18 | 435-210-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | MOAB | UT |
| 2021-01-18 | 435-459-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | MONTICELLO | UT |
| 2021-01-18 | 435-466-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BEARRIV CY | UT |
| 2021-01-18 | 435-500-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | DELTA | UT |
| 2020-09-03 | 435-666-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | PARK CITY | UT |
| 2019-09-12 | 435-292-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | WASATCH | UT |
| 2019-08-29 | 435-296-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | GLNCNYONCY | UT |
| 2019-03-05 | 435-375-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | ST GEORGE | UT |
| 2018-09-11 | 435-393-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | PAROWAN | UT |
| 2018-09-11 | 435-612-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | MONROE | UT |
| 2018-09-11 | 435-990-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BRIAN HEAD | UT |
| 2018-08-16 | 435-670-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SALINA | UT |
| 2017-06-02 | 435-287-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | RICHFIELD | UT |
| 2017-06-02 | 435-310-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BEAVER | UT |
| 2017-06-02 | 435-681-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | NEPHI | UT |
| 2017-03-28 | 435-236-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | ST GEORGE | UT |
| 2017-03-28 | 435-252-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | PARK CITY | UT |
| 2017-03-28 | 435-268-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | TOOELE | UT |
| 2017-03-28 | 435-383-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | CEDAR CITY | UT |
| 2017-03-28 | 435-465-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | BRIGHAM CY | UT |
| 2017-03-01 | 435-777-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | HEBER CITY | UT |
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.