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 |
|---|---|---|---|---|---|---|---|
| 2016-06-24 | 424-317-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | W ANGELES | CA |
| 2016-06-23 | 424-309-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2016-06-23 | 424-309-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2016-06-23 | 424-309-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2016-06-23 | 424-313-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BEVERLYHLS | CA |
| 2016-06-23 | 424-379-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2016-06-21 | 424-308-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN PEDRO | CA |
| 2016-06-21 | 424-452-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | REDONDO | CA |
| 2016-06-21 | 424-452-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | REDONDO | CA |
| 2016-06-20 | 424-317-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | W ANGELES | CA |
| 2016-06-20 | 424-452-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | REDONDO | CA |
| 2016-06-15 | 424-340-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CMTN GRDN | CA |
| 2016-06-15 | 424-531-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CMTN GRDN | CA |
| 2016-06-14 | 424-305-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LOMITA | CA |
| 2016-06-14 | 424-340-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CMTN GRDN | CA |
| 2016-06-10 | 424-369-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | W ANGELES | CA |
| 2016-06-03 | 424-305-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LOMITA | CA |
| 2016-06-03 | 424-307-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | HAWTHORNE | CA |
| 2016-06-01 | 424-388-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MALIBU | CA |
| 2016-05-20 | 424-309-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | INGLEWOOD | CA |
| 2016-05-19 | 424-305-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LOMITA | CA |
| 2016-05-18 | 424-330-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | SNMN SNMN | CA |
| 2016-05-16 | 424-309-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2016-05-16 | 424-309-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2016-05-16 | 424-309-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2016-05-16 | 424-309-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2016-05-16 | 424-317-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2016-05-16 | 424-317-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2016-05-16 | 424-317-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2016-05-16 | 424-317-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2016-05-16 | 424-318-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TORRANCE | CA |
| 2016-05-16 | 424-526-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN MRVS | CA |
| 2016-05-16 | 424-581-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN SNMN | CA |
| 2016-05-11 | 424-356-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2016-05-11 | 424-379-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2016-05-11 | 424-379-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2016-05-09 | 424-304-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | REDONDO | CA |
| 2016-05-09 | 424-304-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | REDONDO | CA |
| 2016-05-09 | 424-304-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | REDONDO | CA |
| 2016-05-09 | 424-304-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | REDONDO | CA |
| 2016-05-09 | 424-304-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | REDONDO | CA |
| 2016-05-09 | 424-359-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | BEVERLYHLS | CA |
| 2016-05-09 | 424-359-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | BEVERLYHLS | CA |
| 2016-05-09 | 424-359-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | BEVERLYHLS | CA |
| 2016-05-09 | 424-359-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | BEVERLYHLS | CA |
| 2016-05-09 | 424-359-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | BEVERLYHLS | CA |
| 2016-05-09 | 424-397-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | EL SEGUNDO | CA |
| 2016-05-06 | 424-306-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | TORRANCE | CA |
| 2016-05-06 | 424-306-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | TORRANCE | CA |
| 2016-05-06 | 424-306-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | TORRANCE | 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.