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 |
|---|---|---|---|---|---|---|---|
| 2006-06-13 | 424-263-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | LOMITA | CA |
| 2006-06-13 | 424-634-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | REDONDO | CA |
| 2006-06-13 | 424-750-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | INGLEWOOD | CA |
| 2006-06-13 | 424-772-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SAN PEDRO | CA |
| 2006-06-13 | 424-772-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2006-06-13 | 424-772-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2006-06-13 | 424-901-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | W ANGELES | CA |
| 2006-05-18 | 424-264-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN PEDRO | CA |
| 2006-05-17 | 424-645-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN SNMN | CA |
| 2006-05-17 | 424-645-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN SNMN | CA |
| 2006-05-16 | 424-634-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | REDONDO | CA |
| 2006-04-11 | 424-789-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2006-03-31 | 424-750-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INGLEWOOD | CA |
| 2006-03-31 | 424-901-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | W ANGELES | CA |
| 2006-03-23 | 424-263-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOMITA | CA |
| 2006-03-23 | 424-264-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SAN PEDRO | CA |
| 2006-03-23 | 424-558-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TORRANCE | CA |
| 2006-03-23 | 424-675-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HAWTHORNE | CA |
| 2006-03-23 | 424-702-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | INGLEWOOD | CA |
| 2006-03-20 | 424-558-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TORRANCE | CA |
| 2006-03-20 | 424-558-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TORRANCE | CA |
| 2006-03-20 | 424-675-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAWTHORNE | CA |
| 2006-03-20 | 424-702-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | INGLEWOOD | CA |
| 2006-03-20 | 424-757-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | TORRANCE | CA |
| 2006-03-15 | 424-772-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SAN PEDRO | 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.