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 321
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-09-02 | 321-447-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | MELBOURNE | FL |
| 2015-06-12 | 321-701-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | EAU GALLIE | FL |
| 2014-01-31 | 321-203-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | WINTERPARK | FL |
| 2013-03-04 | 321-210-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | COCOA | FL |
| 2012-02-06 | 321-261-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | COCOA | FL |
| 2010-05-26 | 321-622-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | EAU GALLIE | FL |
| 2010-05-26 | 321-622-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | EAU GALLIE | FL |
| 2009-05-14 | 321-525-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | COCOA | FL |
| 2009-05-14 | 321-525-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | COCOA | FL |
| 2008-08-18 | 321-292-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | COCOA | FL |
| 2008-04-29 | 321-745-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | COCOA | FL |
| 2008-03-25 | 321-939-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | CELEBRATN | FL |
| 2007-09-05 | 321-745-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | COCOA | FL |
| 2006-01-20 | 321-610-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | EAU GALLIE | FL |
| 2005-07-26 | 321-558-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ORLANDO | FL |
| 2005-03-09 | 321-610-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | EAU GALLIE | FL |
| 2004-07-07 | 321-202-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | ORLANDO | FL |
| 2003-01-27 | 321-426-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | EAU GALLIE | FL |
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.