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 313
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 | 313-457-8XXX | 8000–8999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN6 | MI |
| 2017-07-27 | 313-633-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN6 | MI |
| 2017-02-24 | 313-379-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN1 | MI |
| 2012-04-27 | 313-309-8XXX | 8000–8999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN1 | MI |
| 2009-10-22 | 313-288-7XXX | 7000–7999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN4 | MI |
| 2009-05-15 | 313-499-3XXX | 3000–3999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN2 | MI |
| 2009-05-15 | 313-564-0XXX | 0000–0999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN3 | MI |
| 2009-05-15 | 313-794-9XXX | 9000–9999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN5 | MI |
| 2008-06-13 | 313-394-1XXX | 1000–1999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN1 | MI |
| 2008-06-12 | 313-294-5XXX | 5000–5999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN6 | MI |
| — | 313-242-6XXX | 6000–6999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN5 | MI |
| — | 313-432-3XXX | 3000–3999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN2 | MI |
| — | 313-432-4XXX | 4000–4999 | Assigned | CLEAR RATE COMMUNICATIONS, LLC | 046L | DETROITZN2 | 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.