NumberResearchRecent thousands-block assignments
17 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 424
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 |
|---|---|---|---|---|---|---|---|
| 2007-08-21 | 424-903-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | REDONDO | CA |
| 2007-08-21 | 424-903-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | REDONDO | CA |
| 2007-08-21 | 424-903-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | REDONDO | CA |
| 2007-08-15 | 424-202-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | BEVERLYHLS | CA |
| 2007-08-15 | 424-202-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | BEVERLYHLS | CA |
| 2007-08-13 | 424-750-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INGLEWOOD | CA |
| 2007-08-13 | 424-750-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INGLEWOOD | CA |
| 2007-08-10 | 424-903-4XXX | 4000–4999 | Assigned | PACIFIC BELL (COMPETITIVE) | 7480 | REDONDO | CA |
| 2007-08-08 | 424-456-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | HAWTHORNE | CA |
| 2007-08-07 | 424-558-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2007-08-02 | 424-456-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2007-07-30 | 424-652-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | W ANGELES | CA |
| 2007-07-19 | 424-223-9XXX | 9000–9999 | Assigned | CURATEL, LLC - CA | 993B | INGLEWOOD | CA |
| 2007-07-16 | 424-202-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | BEVERLYHLS | CA |
| 2007-07-16 | 424-203-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | LOMITA | CA |
| 2007-07-16 | 424-229-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | SNMN SNMN | CA |
| 2007-07-13 | 424-228-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN MRVS | CA |
| 2007-07-13 | 424-228-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN MRVS | CA |
| 2007-07-13 | 424-456-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HAWTHORNE | CA |
| 2007-07-13 | 424-901-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | W ANGELES | CA |
| 2007-07-13 | 424-901-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | W ANGELES | CA |
| 2007-07-13 | 424-903-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REDONDO | CA |
| 2007-07-12 | 424-223-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-702-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-702-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-702-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-702-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-789-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-789-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-789-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-789-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-12 | 424-789-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2007-07-03 | 424-212-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | REDONDO | CA |
| 2007-07-02 | 424-653-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2007-06-21 | 424-214-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN SNMN | CA |
| 2007-06-20 | 424-216-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN MRVS | CA |
| 2007-06-20 | 424-216-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN MRVS | CA |
| 2007-06-15 | 424-731-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | TORRANCE | CA |
| 2007-06-13 | 424-214-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNMN SNMN | CA |
| 2007-06-13 | 424-270-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2007-06-13 | 424-270-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2007-06-08 | 424-206-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | REDONDO | CA |
| 2007-05-30 | 424-210-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2007-05-30 | 424-210-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2007-05-30 | 424-210-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2007-05-29 | 424-206-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | REDONDO | CA |
| 2007-05-29 | 424-220-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | EL SEGUNDO | CA |
| 2007-05-25 | 424-225-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2007-05-25 | 424-225-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2007-05-24 | 424-213-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
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.