NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 865
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 |
|---|---|---|---|---|---|---|---|
| 2024-08-14 | 865-383-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BENTCREEK | TN |
| 2016-06-24 | 865-500-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KNOXVILLE | TN |
| 2015-02-19 | 865-409-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KNOXVILLE | TN |
| 2014-12-16 | 865-336-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARYVILLE | TN |
| 2014-04-23 | 865-333-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KNOXVILLE | TN |
| 2011-10-21 | 865-630-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LAKE CITY | TN |
| 2011-10-21 | 865-761-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WHITE PINE | TN |
| 2011-10-20 | 865-325-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GATLINBURG | TN |
| 2011-08-12 | 865-375-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JEFFERSNCY | TN |
| 2011-05-02 | 865-312-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KNOXVILLE | TN |
| 2011-03-03 | 865-245-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROCKWOOD | TN |
| 2011-03-03 | 865-498-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NORRIS | TN |
| 2011-03-03 | 865-551-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WESTSWEETW | TN |
| 2011-03-03 | 865-730-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OLIVER SPG | TN |
| 2010-01-06 | 865-234-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HARRIMAN | TN |
| 2010-01-06 | 865-344-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DANDRIDGE | TN |
| 2009-11-10 | 865-322-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHESTNUTHI | TN |
| 2009-09-28 | 865-229-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GREENBACK | TN |
| 2009-09-28 | 865-248-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KINGSTON | TN |
| 2009-09-28 | 865-264-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CLINTON | TN |
| 2009-09-28 | 865-745-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MAYNARDVL | TN |
| 2009-06-15 | 865-268-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARYVILLE | TN |
| 2009-06-15 | 865-272-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OAK RIDGE | TN |
| 2009-06-15 | 865-446-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SEVIERVL | TN |
| 2009-06-15 | 865-465-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MASCOT | TN |
| 2009-06-15 | 865-635-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LENOIRCITY | TN |
| 2009-06-15 | 865-657-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOUDON | TN |
| 2009-06-15 | 865-896-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SOLWAY | TN |
| 2009-06-15 | 865-935-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BEAN STATN | TN |
| 2009-06-04 | 865-253-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KNOXVILLE | TN |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.