NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 859
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-09-20 | 859-551-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | LEXINGTON | KY |
| 2016-10-12 | 859-300-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | LEXINGTON | KY |
| 2016-10-07 | 859-739-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | COVINGTON | KY |
| 2016-06-14 | 859-300-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | LEXINGTON | KY |
| 2015-01-02 | 859-469-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | LEXINGTON | KY |
| 2012-12-19 | 859-303-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | LEXINGTON | KY |
| 2011-09-30 | 859-241-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | NICHOLASVL | KY |
| 2008-06-24 | 859-410-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | LEXINGTON | KY |
| 2008-06-24 | 859-550-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF KENTUCKY, LLC - KY | 7260 | LEXINGTON | KY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.