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 586
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 |
|---|---|---|---|---|---|---|---|
| 2019-03-29 | 586-496-8XXX | 8000–8999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | ROSEVILLE | MI |
| 2018-02-20 | 586-666-8XXX | 8000–8999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | MT CLEMENS | MI |
| 2017-12-11 | 586-250-9XXX | 9000–9999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | WARREN | MI |
| 2011-03-25 | 586-533-3XXX | 3000–3999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | ROSEVILLE | MI |
| 2009-10-21 | 586-244-6XXX | 6000–6999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | NEW HAVEN | MI |
| 2009-10-21 | 586-330-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | NEWBALTIMR | MI |
| 2009-10-21 | 586-421-8XXX | 8000–8999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | MT CLEMENS | MI |
| 2009-10-21 | 586-430-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | RICHMOND | MI |
| 2009-10-21 | 586-540-6XXX | 6000–6999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | ROMEO | MI |
| 2009-10-21 | 586-784-3XXX | 3000–3999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | ARMADA | MI |
| 2009-10-21 | 586-786-2XXX | 2000–2999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | WASHINGTON | MI |
| 2009-05-15 | 586-441-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | ROSEVILLE | MI |
| 2009-05-15 | 586-576-2XXX | 2000–2999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | CENTERLINE | MI |
| 2009-05-15 | 586-991-8XXX | 8000–8999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | UTICA | MI |
| 2008-06-12 | 586-275-1XXX | 1000–1999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | WARREN | MI |
| 2007-02-20 | 586-439-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | ROSEVILLE | MI |
| — | 586-723-2XXX | 2000–2999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | MT CLEMENS | MI |
| — | 586-723-3XXX | 3000–3999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | MT CLEMENS | MI |
| — | 586-723-4XXX | 4000–4999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | MT CLEMENS | MI |
| — | 586-723-5XXX | 5000–5999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | MT CLEMENS | MI |
| — | 586-723-6XXX | 6000–6999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | MT CLEMENS | MI |
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.