NumberResearchRecent thousands-block assignments
22 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, 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 |
|---|---|---|---|---|---|---|---|
| 2005-08-01 | 224-538-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WAUKEGAN | IL |
| 2005-08-01 | 224-757-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROUND LAKE | IL |
| 2005-08-01 | 224-757-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROUND LAKE | IL |
| 2005-08-01 | 224-765-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HIGHLANDPK | IL |
| 2005-08-01 | 224-765-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HIGHLANDPK | IL |
| 2005-08-01 | 224-766-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GLENVIEW | IL |
| 2005-08-01 | 224-766-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GLENVIEW | IL |
| 2005-08-01 | 224-766-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GLENVIEW | IL |
| 2005-07-29 | 224-333-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ALGONQUIN | IL |
| 2005-07-29 | 224-333-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ALGONQUIN | IL |
| 2005-07-27 | 224-993-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | WAUCONDA | IL |
| 2005-07-25 | 224-512-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BARRINGTON | IL |
| 2005-07-14 | 224-515-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEERFIELD | IL |
| 2005-07-14 | 224-515-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEERFIELD | IL |
| 2005-07-14 | 224-632-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEERFIELD | IL |
| 2005-07-14 | 224-632-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEERFIELD | IL |
| 2005-07-14 | 224-632-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEERFIELD | IL |
| 2005-07-13 | 224-612-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | DESPLAINES | IL |
| 2005-07-13 | 224-612-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | DESPLAINES | IL |
| 2005-07-11 | 224-512-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | BARRINGTON | IL |
| 2005-07-11 | 224-848-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BARRINGTON | IL |
| 2005-07-11 | 224-848-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BARRINGTON | IL |
| 2005-07-11 | 224-848-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BARRINGTON | IL |
| 2005-07-06 | 224-366-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | IL |
| 2005-07-06 | 224-366-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | IL |
| 2005-07-06 | 224-366-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | IL |
| 2005-07-06 | 224-366-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | IL |
| 2005-07-06 | 224-366-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | IL |
| 2005-06-22 | 224-388-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2005-06-22 | 224-388-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2005-06-22 | 224-538-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | WAUKEGAN | IL |
| 2005-06-22 | 224-538-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | WAUKEGAN | IL |
| 2005-06-16 | 224-345-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ARLIGTNHTS | IL |
| 2005-06-16 | 224-515-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | DEERFIELD | IL |
| 2005-06-16 | 224-766-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | GLENVIEW | IL |
| 2005-05-30 | 224-280-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | WAUKEGAN | IL |
| 2005-05-26 | 224-345-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | ARLIGTNHTS | IL |
| 2005-05-25 | 224-420-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | EVANSTON | IL |
| 2005-05-25 | 224-757-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROUND LAKE | IL |
| 2005-05-03 | 224-361-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | DESPLAINES | IL |
| 2005-04-29 | 224-267-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ANTIOCH | IL |
| 2005-04-27 | 224-355-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2005-04-26 | 224-636-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2005-04-26 | 224-636-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2005-04-26 | 224-636-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2005-04-26 | 224-636-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2005-04-26 | 224-636-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2005-04-19 | 224-543-4XXX | 4000–4999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | HALF DAY | IL |
| 2005-04-18 | 224-993-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | WAUCONDA | IL |
| 2005-04-07 | 224-520-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROSELLE | IL |
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.