NumberResearchRecent thousands-block assignments
12 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 |
|---|---|---|---|---|---|---|---|
| 2018-01-12 | 424-559-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | W ANGELES | CA |
| 2018-01-10 | 424-489-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2018-01-10 | 424-489-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2018-01-10 | 424-489-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2018-01-10 | 424-489-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2018-01-08 | 424-538-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | SNMN SNMN | CA |
| 2017-12-20 | 424-310-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | HAWTHORNE | CA |
| 2017-12-20 | 424-310-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | HAWTHORNE | CA |
| 2017-12-20 | 424-421-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| 2017-12-20 | 424-421-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| 2017-12-20 | 424-538-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNMN SNMN | CA |
| 2017-12-20 | 424-538-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | SNMN SNMN | CA |
| 2017-12-19 | 424-414-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2017-12-19 | 424-414-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2017-12-12 | 424-832-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2017-12-08 | 424-405-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2017-12-08 | 424-410-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNMN MRVS | CA |
| 2017-12-05 | 424-512-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BEVERLYHLS | CA |
| 2017-12-05 | 424-512-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BEVERLYHLS | CA |
| 2017-12-01 | 424-310-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2017-12-01 | 424-310-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2017-11-28 | 424-405-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | EL SEGUNDO | CA |
| 2017-11-28 | 424-405-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | EL SEGUNDO | CA |
| 2017-11-27 | 424-414-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2017-11-27 | 424-414-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2017-11-27 | 424-552-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2017-11-27 | 424-552-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2017-11-27 | 424-552-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2017-11-22 | 424-401-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | LOMITA | CA |
| 2017-11-22 | 424-401-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | LOMITA | CA |
| 2017-11-21 | 424-402-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W ANGELES | CA |
| 2017-11-21 | 424-405-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2017-11-15 | 424-541-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | INGLEWOOD | CA |
| 2017-11-07 | 424-369-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | W ANGELES | CA |
| 2017-11-06 | 424-308-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SAN PEDRO | CA |
| 2017-11-06 | 424-403-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CMTN CMTN | CA |
| 2017-11-06 | 424-532-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | CULVERCITY | CA |
| 2017-11-03 | 424-405-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EL SEGUNDO | CA |
| 2017-10-31 | 424-267-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2017-10-31 | 424-267-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2017-10-30 | 424-410-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNMN MRVS | CA |
| 2017-10-24 | 424-781-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MALIBU | CA |
| 2017-10-18 | 424-403-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | CMTN CMTN | CA |
| 2017-10-18 | 424-403-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | CMTN CMTN | CA |
| 2017-10-17 | 424-404-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | REDONDO | CA |
| 2017-10-17 | 424-404-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | REDONDO | CA |
| 2017-10-17 | 424-404-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | REDONDO | CA |
| 2017-10-17 | 424-404-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | REDONDO | CA |
| 2017-10-12 | 424-404-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDONDO | CA |
| 2017-10-11 | 424-405-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL SEGUNDO | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.