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 770
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-10-10 | 770-970-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2016-09-19 | 770-628-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2016-09-19 | 770-672-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2016-09-19 | 770-672-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2016-09-19 | 770-802-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2016-09-19 | 770-802-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2016-09-19 | 770-802-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2016-09-19 | 770-802-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2016-05-04 | 770-694-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2015-04-15 | 770-790-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2014-12-16 | 770-966-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2014-11-14 | 770-742-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2014-10-28 | 770-417-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2011-04-08 | 770-797-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2010-01-12 | 770-691-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LULA | GA |
| 2010-01-12 | 770-741-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KINGSTON | GA |
| 2010-01-04 | 770-415-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BREMEN | GA |
| 2010-01-04 | 770-450-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BARNESVL | GA |
| 2009-07-17 | 770-285-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CONYERS | GA |
| 2009-07-17 | 770-504-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JACKSON | GA |
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.