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
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-03-07 | 435-262-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FAIRVIEW | UT |
| 2022-03-07 | 435-323-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PARKVALLEY | UT |
| 2022-03-07 | 435-667-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BRIGHAM CY | UT |
| 2022-03-04 | 435-746-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | KAMAS | UT |
| 2022-02-24 | 435-567-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | RICHFIELD | UT |
| 2022-02-24 | 435-569-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MOAB | UT |
| 2022-02-22 | 435-284-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | KANOSH | UT |
| 2022-02-22 | 435-337-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LAKEPOWELL | UT |
| 2022-02-22 | 435-422-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HOWELL | UT |
| 2022-02-22 | 435-432-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PROMONTORY | UT |
| 2022-02-22 | 435-626-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SNOWVILLE | UT |
| 2022-02-22 | 435-733-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | DUCHESNE | UT |
| 2022-01-27 | 435-737-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | TOOELE | UT |
| 2022-01-27 | 435-746-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | KAMAS | UT |
| 2021-06-15 | 435-749-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CASTLEDALE | UT |
| 2021-05-20 | 435-274-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | TOOELE | UT |
| 2021-05-20 | 435-874-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HILDALE | UT |
| 2021-05-17 | 435-266-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LYNNDYL | UT |
| 2021-05-17 | 435-523-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ST GEORGE | UT |
| 2021-04-13 | 435-547-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BRIAN HEAD | 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.