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 479
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-07-17 | 479-308-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FORT SMITH | AR |
| 2015-06-01 | 479-340-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROGERS | AR |
| 2015-03-11 | 479-361-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGDALE | AR |
| 2014-08-14 | 479-544-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BENTONVL | AR |
| 2014-08-05 | 479-316-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FAYETTEVL | AR |
| 2011-10-12 | 479-385-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MENA | AR |
| 2011-06-17 | 479-689-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VAN BUREN | AR |
| 2011-03-23 | 479-323-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GRAVETTE | AR |
| 2011-03-02 | 479-789-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HINDSVILLE | AR |
| 2011-03-02 | 479-929-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NATURALDAM | AR |
| 2009-12-09 | 479-265-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EUREKA SPG | AR |
| 2009-03-12 | 479-203-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ELMSPRINGS | AR |
| 2009-03-12 | 479-224-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CENTERTON | AR |
| 2008-04-25 | 479-372-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROGERS | AR |
| 2008-04-25 | 479-553-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BENTONVL | AR |
| 2008-04-25 | 479-935-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FAYETTEVL | AR |
| 2008-04-23 | 479-365-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGDALE | AR |
| 2005-04-13 | 479-763-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FORT SMITH | AR |
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.