NumberResearchRecent thousands-block assignments
22 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, last 30 days — NPA 224
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-04-30 | 224-643-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | LAKE VILLA | IL |
| 2004-04-30 | 224-643-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | LAKE VILLA | IL |
| 2004-04-15 | 224-717-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ZION | IL |
| 2004-04-15 | 224-772-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | WAUKEGAN | IL |
| 2004-04-15 | 224-772-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | WAUKEGAN | IL |
| 2004-03-09 | 224-698-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | ROSELLE | IL |
| 2004-02-17 | 224-430-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | WAUKEGAN | IL |
| 2004-02-04 | 224-629-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ELGIN | IL |
| 2004-01-16 | 224-232-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ARLIGTNHTS | IL |
| 2004-01-16 | 224-805-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ARLIGTNHTS | IL |
| 2004-01-16 | 224-805-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ARLIGTNHTS | IL |
| 2003-12-31 | 224-430-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAUKEGAN | IL |
| 2003-12-11 | 224-430-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | WAUKEGAN | IL |
| 2003-11-13 | 224-232-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2003-11-12 | 224-212-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | LAKEFOREST | IL |
| 2003-11-12 | 224-212-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | LAKEFOREST | IL |
| 2003-11-12 | 224-212-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | LAKEFOREST | IL |
| 2003-11-12 | 224-212-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | LAKEFOREST | IL |
| 2003-09-23 | 224-430-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAUKEGAN | IL |
| 2003-07-30 | 224-521-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | GLENVIEW | IL |
| 2003-07-30 | 224-643-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | LAKE VILLA | IL |
| 2003-07-30 | 224-765-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | HIGHLANDPK | IL |
| 2003-07-28 | 224-629-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ELGIN | IL |
| 2003-07-10 | 224-588-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | WHEELING | IL |
| 2003-07-10 | 224-629-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ELGIN | IL |
| 2003-06-05 | 224-364-0XXX | 0000–0999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-1XXX | 1000–1999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-8XXX | 8000–8999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 224-364-9XXX | 9000–9999 | Assigned | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-04-23 | 224-521-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GLENVIEW | IL |
| 2003-02-20 | 224-305-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-20 | 224-305-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-01-23 | 224-232-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2002-12-20 | 224-293-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | DUNDEE | IL |
| 2002-12-20 | 224-588-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | WHEELING | IL |
| 2002-12-04 | 224-805-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | 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.