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 605
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 |
|---|---|---|---|---|---|---|---|
| 2022-03-24 | 605-478-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HIGHMORE | SD |
| 2022-03-10 | 605-909-0XXX | 0000–0999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HILL CITY | SD |
| 2022-03-01 | 605-265-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WEBSTER | SD |
| 2022-03-01 | 605-268-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SISSETON | SD |
| 2022-03-01 | 605-663-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HURON | SD |
| 2022-02-28 | 605-233-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CLARK | SD |
| 2022-02-28 | 605-276-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ROSCOE | SD |
| 2022-02-28 | 605-282-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BOWDLE | SD |
| 2022-02-28 | 605-638-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | VERMILLION | SD |
| 2022-02-28 | 605-639-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SPEARFISH | SD |
| 2022-02-28 | 605-744-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LENNOX | SD |
| 2022-02-24 | 605-992-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BIGSTONECY | SD |
| 2022-02-08 | 605-982-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ABERDEEN | SD |
| 2022-01-14 | 605-898-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | IROQUOIS | SD |
| 2022-01-13 | 605-634-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CAVOUR | SD |
| 2022-01-13 | 605-752-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FTTHOMPSON | SD |
| 2022-01-10 | 605-746-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PLATTE | SD |
| 2021-08-11 | 605-736-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BROOKINGS | SD |
| 2021-08-11 | 605-774-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SIOUX FLS | SD |
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.