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 847
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-09-22 | 847-807-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROSELLE | IL |
| 2011-03-09 | 847-252-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROSELLE | IL |
| 2006-11-22 | 847-865-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WAUCONDA | IL |
| 2006-11-02 | 847-906-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WILMETTE | IL |
| 2006-11-02 | 847-978-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PISTAKHLDS | IL |
| 2006-06-21 | 847-386-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WINNETKA | IL |
| 2006-06-19 | 847-777-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WHEELING | IL |
| 2006-06-07 | 847-276-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HALF DAY | IL |
| 2006-05-26 | 847-410-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SKOKIE | IL |
| 2006-04-17 | 847-447-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FRANKLINPK | IL |
| 2006-03-09 | 847-926-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HIGHLANDPK | IL |
| 2006-03-09 | 847-986-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GRAYSLAKE | IL |
| 2006-03-08 | 847-859-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EVANSTON | IL |
| 2006-02-03 | 847-485-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PALATINE | IL |
| 2006-02-03 | 847-886-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROUND LAKE | IL |
| 2006-02-02 | 847-893-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BARTLETT | IL |
| 2005-04-22 | 847-242-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GLENCOE | IL |
| 2005-04-05 | 847-281-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LIBERTYVL | IL |
| 2005-04-05 | 847-387-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BARRINGTON | IL |
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.