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 417
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 |
|---|---|---|---|---|---|---|---|
| 2024-07-25 | 417-753-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROGERSVL | MO |
| 2015-06-03 | 417-351-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGFLD | MO |
| 2015-05-15 | 417-281-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOCKWOOD | MO |
| 2014-10-28 | 417-351-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGFLD | MO |
| 2014-04-04 | 417-319-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGFLD | MO |
| 2013-12-12 | 417-228-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EFORTSCOTT | MO |
| 2013-10-14 | 417-583-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CLEVER | MO |
| 2013-10-14 | 417-736-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STRAFFORD | MO |
| 2012-11-06 | 417-283-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEVADA | MO |
| 2012-11-06 | 417-295-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LAMAR | MO |
| 2012-11-06 | 417-456-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEOSHO | MO |
| 2012-10-24 | 417-771-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGFLD | MO |
| 2011-09-30 | 417-463-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARIONVL | MO |
| 2011-09-28 | 417-614-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CARL JCT | MO |
| 2011-09-22 | 417-394-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JASPER | MO |
| 2011-09-22 | 417-476-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PIERCECITY | MO |
| 2011-09-22 | 417-567-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FAIR GROVE | MO |
| 2011-09-22 | 417-685-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WILLARD | MO |
| 2011-09-22 | 417-695-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BILLINGS | MO |
| 2011-05-20 | 417-373-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EPITTSBURG | MO |
| 2011-04-21 | 417-313-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CARTHAGE | MO |
| 2011-04-21 | 417-635-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MONETT | MO |
| 2011-04-21 | 417-717-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WEBB CITY | MO |
| 2011-03-23 | 417-352-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WALNUT GRV | MO |
| 2009-12-14 | 417-363-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ASH GROVE | MO |
| 2008-12-08 | 417-647-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | REPUBLIC | MO |
| 2008-12-08 | 417-726-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JOPLIN | MO |
| 2008-11-06 | 417-374-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NIXA | MO |
| 2005-04-15 | 417-350-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGFLD | MO |
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.