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 336
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-06-02 | 336-867-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | LEXINGTON | NC |
| 2014-10-02 | 336-814-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2014-07-16 | 336-814-0XXX | 0000–0999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2014-03-07 | 336-875-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | HIGH POINT | NC |
| 2013-12-03 | 336-875-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | HIGH POINT | NC |
| 2013-08-15 | 336-554-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2011-08-05 | 336-615-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2011-03-21 | 336-497-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | KERNERSVL | NC |
| 2008-04-14 | 336-389-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2007-01-15 | 336-778-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | WINSTN SAL | NC |
| 2006-10-13 | 336-970-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | WINSTN SAL | NC |
| 2006-10-13 | 336-970-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | WINSTN SAL | NC |
| 2006-08-14 | 336-389-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2006-08-14 | 336-389-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2006-08-14 | 336-389-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2006-06-23 | 336-447-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GIBSONVL | NC |
| 2006-02-24 | 336-397-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | WINSTN SAL | NC |
| 2006-02-24 | 336-397-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | WINSTN SAL | NC |
| 2005-08-24 | 336-231-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | WINSTN SAL | NC |
| 2005-04-20 | 336-313-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | THOMASVL | NC |
| 2005-03-01 | 336-232-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2005-02-28 | 336-232-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-0XXX | 0000–0999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-10-25 | 336-868-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-07-13 | 336-617-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-06-10 | 336-232-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | GREENSBORO | NC |
| 2004-04-05 | 336-289-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | HIGH POINT | NC |
| 2003-02-04 | 336-376-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | 7973 | SAXAPAHAW | NC |
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.