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 920
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 |
|---|---|---|---|---|---|---|---|
| 2015-07-13 | 920-940-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GREEN BAY | WI |
| 2014-08-05 | 920-221-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | APPLETON | WI |
| 2013-10-09 | 920-634-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GREEN BAY | WI |
| 2012-11-07 | 920-473-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STURGEONBY | WI |
| 2011-12-05 | 920-214-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MAYVILLE | WI |
| 2011-12-05 | 920-550-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SHEBOGNFLS | WI |
| 2011-12-05 | 920-769-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MANITOWOC | WI |
| 2011-11-14 | 920-304-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KEWAUNEE | WI |
| 2011-11-14 | 920-365-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ALGOMA | WI |
| 2011-11-14 | 920-532-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WRIGHTSTN | WI |
| 2011-11-14 | 920-541-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JEFFERSON | WI |
| 2011-11-14 | 920-626-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBUS | WI |
| 2011-11-14 | 920-706-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WINNECONNE | WI |
| 2011-11-14 | 920-859-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OMRO | WI |
| 2011-05-20 | 920-239-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WAUPUN | WI |
| 2011-05-20 | 920-386-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JUNEAU | WI |
| 2011-05-20 | 920-390-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WATERTOWN | WI |
| 2011-05-20 | 920-542-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FTATKINSON | WI |
| 2011-05-20 | 920-543-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BURNETT | WI |
| 2011-05-20 | 920-643-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HORICON | WI |
| 2011-02-23 | 920-352-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VAN DYNE | WI |
| 2010-01-14 | 920-631-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BEAVER DAM | WI |
| 2010-01-11 | 920-877-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HORTONVL | WI |
| 2008-03-14 | 920-423-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LTL CHUTE | WI |
| 2008-03-14 | 920-462-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KAUKAUNA | WI |
| 2008-03-14 | 920-558-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEENAH | WI |
| 2008-03-13 | 920-351-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DE PERE | WI |
| 2008-03-05 | 920-358-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | APPLETON | WI |
| 2006-10-17 | 920-783-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SHEBOYGAN | WI |
| 2006-03-29 | 920-266-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FONDDU LAC | WI |
| 2006-03-21 | 920-267-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OSHKOSH | WI |
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.