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
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2011-02-10 | 847-503-1XXX | 1000–1999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2011-02-10 | 847-503-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2011-02-10 | 847-503-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2011-02-10 | 847-503-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2011-02-10 | 847-503-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2011-02-10 | 847-503-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2011-02-10 | 847-503-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2011-02-10 | 847-503-8XXX | 8000–8999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2010-08-02 | 847-857-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | ELGIN | IL |
| 2010-08-02 | 847-857-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | ELGIN | IL |
| 2010-08-02 | 847-857-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | ELGIN | IL |
| 2010-03-24 | 847-834-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2010-03-24 | 847-834-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2009-11-19 | 847-396-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DUNDEE | IL |
| 2009-10-29 | 847-659-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HUNTLEY | IL |
| 2009-10-29 | 847-659-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HUNTLEY | IL |
| 2009-10-29 | 847-659-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HUNTLEY | IL |
| 2009-09-02 | 847-396-1XXX | 1000–1999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DUNDEE | IL |
| 2009-09-02 | 847-396-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DUNDEE | IL |
| 2009-09-02 | 847-396-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DUNDEE | IL |
| 2009-09-02 | 847-396-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DUNDEE | IL |
| 2009-09-02 | 847-396-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DUNDEE | IL |
| 2009-07-14 | 847-552-0XXX | 0000–0999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-1XXX | 1000–1999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-8XXX | 8000–8999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2009-07-14 | 847-552-9XXX | 9000–9999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HALF DAY | IL |
| 2008-07-22 | 847-802-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HUNTLEY | IL |
| 2008-05-14 | 847-532-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | ALGONQUIN | IL |
| 2008-05-14 | 847-532-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | ALGONQUIN | IL |
| 2008-05-13 | 847-792-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HAMPSHIRE | IL |
| 2008-05-09 | 847-683-8XXX | 8000–8999 | Assigned | ILLINOIS BELL TEL CO | 9329 | HAMPSHIRE | IL |
| 2007-10-29 | 847-527-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DEERFIELD | IL |
| 2007-10-29 | 847-527-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DEERFIELD | IL |
| 2007-10-29 | 847-527-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DEERFIELD | IL |
| 2007-10-29 | 847-527-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DEERFIELD | IL |
| 2004-05-19 | 847-617-0XXX | 0000–0999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-1XXX | 1000–1999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | IL |
| 2004-05-19 | 847-617-8XXX | 8000–8999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WHEELING | 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.