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 678
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-09-01 | 678-607-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CONYERS | GA |
| 2015-07-06 | 678-742-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2015-03-09 | 678-585-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2014-10-28 | 678-217-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2014-08-14 | 678-271-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2014-07-25 | 678-388-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2014-05-15 | 678-961-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2014-05-14 | 678-426-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2014-03-05 | 678-214-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2014-02-17 | 678-884-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2013-11-13 | 678-503-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2013-10-09 | 678-884-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2013-09-03 | 678-594-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2013-06-26 | 678-806-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CONYERS | GA |
| 2013-06-04 | 678-403-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2013-05-07 | 678-515-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA | GA |
| 2013-04-22 | 678-962-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2013-01-10 | 678-515-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA | GA |
| 2012-12-19 | 678-503-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2012-11-21 | 678-829-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2012-08-03 | 678-695-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2012-07-31 | 678-846-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2012-02-08 | 678-742-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2012-01-11 | 678-834-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2011-10-17 | 678-587-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2011-07-20 | 678-504-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2011-06-10 | 678-593-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2011-03-15 | 678-426-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2011-02-04 | 678-336-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2011-01-25 | 678-568-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ZEBULON | GA |
| 2011-01-25 | 678-853-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROOPVILLE | GA |
| 2011-01-24 | 678-257-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BOWDON | GA |
| 2011-01-24 | 678-573-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TALLAPOOSA | GA |
| 2011-01-24 | 678-582-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GRANTVILLE | GA |
| 2011-01-24 | 678-647-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BUCHANAN | GA |
| 2011-01-24 | 678-786-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CONCORD | GA |
| 2011-01-24 | 678-871-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SOCIALCRCL | GA |
| 2010-12-28 | 678-653-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2010-11-22 | 678-399-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA | GA |
| 2010-09-22 | 678-825-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2010-09-09 | 678-586-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA SO | GA |
| 2010-08-09 | 678-653-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2010-07-14 | 678-694-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2010-05-04 | 678-974-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA | GA |
| 2010-03-30 | 678-403-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NW | GA |
| 2010-02-01 | 678-861-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CEDARTOWN | GA |
| 2010-02-01 | 678-883-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROCKMART | GA |
| 2010-01-26 | 678-404-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2010-01-13 | 678-404-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATLANTA NE | GA |
| 2009-12-31 | 678-800-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ADAIRSVL | 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.