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 585
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 |
|---|---|---|---|---|---|---|---|
| 2022-02-22 | 585-543-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | OLEAN | NY |
| 2022-02-15 | 585-832-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HENRIETTA | NY |
| 2022-02-04 | 585-873-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CALEDONIA | NY |
| 2022-02-03 | 585-816-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | NAPLES | NY |
| 2022-01-13 | 585-887-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LIVONIA | NY |
| 2022-01-06 | 585-824-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WAYLAND | NY |
| 2021-06-18 | 585-568-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ROCHESTER | NY |
| 2021-06-03 | 585-825-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WEBSTER | NY |
| 2021-04-21 | 585-837-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BATAVIA | NY |
| 2021-04-08 | 585-853-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ATLANTA | NY |
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.