NumberResearchRecent thousands-block assignments
3 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 847
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 |
|---|---|---|---|---|---|---|---|
| 2003-07-30 | 847-512-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | WILMETTE | IL |
| 2003-07-30 | 847-752-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | GRAYSLAKE | IL |
| 2003-07-30 | 847-847-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | LAKEZURICH | IL |
| 2003-07-30 | 847-915-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ALGONQUIN | IL |
| 2003-07-18 | 847-354-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | IL |
| 2003-07-18 | 847-354-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | IL |
| 2003-07-18 | 847-354-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | IL |
| 2003-07-16 | 847-276-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | HALF DAY | IL |
| 2003-07-16 | 847-276-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | HALF DAY | IL |
| 2003-07-16 | 847-276-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HALF DAY | IL |
| 2003-07-16 | 847-276-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HALF DAY | IL |
| 2003-07-16 | 847-276-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HALF DAY | IL |
| 2003-07-10 | 847-264-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | IL |
| 2003-07-03 | 847-321-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-07-03 | 847-321-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-07-03 | 847-553-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-07-03 | 847-553-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-07-03 | 847-553-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-07-03 | 847-553-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-07-03 | 847-553-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-06-23 | 847-754-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2003-06-23 | 847-754-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2003-06-23 | 847-754-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2003-06-06 | 847-716-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WINNETKA | IL |
| 2003-05-28 | 847-354-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | IL |
| 2003-05-28 | 847-354-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | IL |
| 2003-05-28 | 847-354-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | IL |
| 2003-05-13 | 847-653-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | PARK RIDGE | IL |
| 2003-05-08 | 847-483-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ARLIGTNHTS | IL |
| 2003-05-06 | 847-268-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | PARK RIDGE | IL |
| 2003-05-06 | 847-841-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | ELGIN | IL |
| 2003-04-28 | 847-235-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | LAKEFOREST | IL |
| 2003-04-22 | 847-752-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | GRAYSLAKE | IL |
| 2003-04-18 | 847-276-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | HALF DAY | IL |
| 2003-04-18 | 847-321-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2003-04-18 | 847-321-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | DESPLAINES | IL |
| 2003-04-09 | 847-829-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CARY | IL |
| 2003-04-07 | 847-230-3XXX | 3000–3999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROSELLE | IL |
| 2003-03-13 | 847-598-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | ROSELLE | IL |
| 2003-03-03 | 847-513-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | NORTHBROOK | IL |
| 2003-03-03 | 847-737-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | FRANKLINPK | IL |
| 2003-02-28 | 847-876-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | HALF DAY | IL |
| 2003-02-14 | 847-239-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-14 | 847-239-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2003-02-12 | 847-227-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | DESPLAINES | IL |
| 2003-02-07 | 847-403-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | WHEELING | IL |
| 2003-01-31 | 847-984-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | LIBERTYVL | IL |
| 2003-01-23 | 847-852-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | BARRINGTON | IL |
| 2003-01-22 | 847-354-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | ELK GROVE | IL |
| 2003-01-16 | 847-278-3XXX | 3000–3999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | 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.