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 |
|---|---|---|---|---|---|---|---|
| 2015-06-30 | 424-387-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNMN SNMN | CA |
| 2015-06-30 | 424-610-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | SNMN SNMN | CA |
| 2015-06-29 | 424-526-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2015-06-22 | 424-378-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LOMITA | CA |
| 2015-06-18 | 424-356-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | INGLEWOOD | CA |
| 2015-06-18 | 424-398-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDONDO | CA |
| 2015-06-18 | 424-398-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDONDO | CA |
| 2015-06-18 | 424-536-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN PEDRO | CA |
| 2015-06-12 | 424-355-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2015-06-11 | 424-368-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN PEDRO | CA |
| 2015-06-09 | 424-369-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | W ANGELES | CA |
| 2015-06-09 | 424-375-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | CMTN GRDN | CA |
| 2015-06-09 | 424-384-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | SNMN MRVS | CA |
| 2015-06-08 | 424-355-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-06-08 | 424-355-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-06-08 | 424-358-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2015-06-08 | 424-376-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2015-06-08 | 424-542-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-06-08 | 424-542-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-06-08 | 424-542-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-06-08 | 424-542-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-06-08 | 424-542-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-06-05 | 424-355-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BEVERLYHLS | CA |
| 2015-06-04 | 424-398-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | REDONDO | CA |
| 2015-06-04 | 424-532-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CULVERCITY | CA |
| 2015-06-04 | 424-532-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CULVERCITY | CA |
| 2015-06-03 | 424-372-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2015-06-03 | 424-372-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2015-06-03 | 424-384-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNMN MRVS | CA |
| 2015-06-03 | 424-387-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNMN SNMN | CA |
| 2015-06-03 | 424-387-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNMN SNMN | CA |
| 2015-06-03 | 424-542-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BEVERLYHLS | CA |
| 2015-06-02 | 424-349-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | CMTN CMTN | CA |
| 2015-06-02 | 424-349-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | CMTN CMTN | CA |
| 2015-06-02 | 424-351-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2015-06-02 | 424-351-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| 2015-06-02 | 424-363-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| 2015-06-02 | 424-363-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| 2015-05-26 | 424-610-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN SNMN | CA |
| 2015-05-26 | 424-610-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN SNMN | CA |
| 2015-05-21 | 424-384-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN MRVS | CA |
| 2015-05-19 | 424-340-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CMTN GRDN | CA |
| 2015-05-19 | 424-340-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2015-05-19 | 424-349-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CMTN CMTN | CA |
| 2015-05-19 | 424-349-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CMTN CMTN | CA |
| 2015-05-18 | 424-339-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2015-05-18 | 424-368-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2015-05-18 | 424-535-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2015-05-18 | 424-535-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2015-05-14 | 424-384-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | 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.