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 478
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-07-31 | 478-346-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WRIGHTSVL | GA |
| 2024-07-23 | 478-480-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WADLEY | GA |
| 2015-11-30 | 478-703-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MACON | GA |
| 2013-10-15 | 478-253-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOUISVILLE | GA |
| 2013-10-10 | 478-401-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MILLEN | GA |
| 2013-10-10 | 478-569-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SARDIS | GA |
| 2013-01-24 | 478-419-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SWAINSBORO | GA |
| 2012-11-27 | 478-559-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EASTMAN | GA |
| 2012-01-13 | 478-412-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANDERSVL | GA |
| 2011-02-23 | 478-324-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COCHRAN | GA |
| 2010-07-28 | 478-273-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WARNERRBNS | GA |
| 2010-07-28 | 478-304-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DUBLIN | GA |
| 2010-07-28 | 478-827-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FORTVALLEY | GA |
| 2010-07-28 | 478-993-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FORSYTH | GA |
| 2010-07-06 | 478-305-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MACON | GA |
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.