NumberResearchRecent thousands-block assignments
34 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 442
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 |
|---|---|---|---|---|---|---|---|
| 2015-12-22 | 442-228-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | BISHOP | CA |
| 2015-12-22 | 442-255-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | VICTORVL | CA |
| 2015-12-22 | 442-255-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | VICTORVL | CA |
| 2015-12-21 | 442-256-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | INDIO | CA |
| 2015-12-21 | 442-271-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | EL CENTRO | CA |
| 2015-12-18 | 442-257-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ESCONDIDO | CA |
| 2015-12-10 | 442-237-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | ESCONDIDO | CA |
| 2015-12-10 | 442-237-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | ESCONDIDO | CA |
| 2015-12-09 | 442-282-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PALMDESERT | CA |
| 2015-12-03 | 442-269-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | JOSHUATREE | CA |
| 2015-12-03 | 442-282-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PALMDESERT | CA |
| 2015-11-30 | 442-272-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | INYOKERN | CA |
| 2015-11-23 | 442-256-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | INDIO | CA |
| 2015-11-23 | 442-274-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PALMDESERT | CA |
| 2015-11-20 | 442-262-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | OCSD OCSD | CA |
| 2015-11-16 | 442-249-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | VTVL ADLN | CA |
| 2015-11-11 | 442-324-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | INDIO | CA |
| 2015-11-11 | 442-347-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BARSTOW | CA |
| 2015-11-11 | 442-347-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BARSTOW | CA |
| 2015-11-10 | 442-271-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL CENTRO | CA |
| 2015-11-02 | 442-268-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PALM SPG | CA |
| 2015-10-30 | 442-347-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BARSTOW | CA |
| 2015-10-29 | 442-254-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FALLBROOK | CA |
| 2015-10-20 | 442-272-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | INYOKERN | CA |
| 2015-10-19 | 442-259-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SUMMIT VLY | CA |
| 2015-10-08 | 442-278-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VALLEY CTR | CA |
| 2015-10-07 | 442-267-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | VTVL HSPR | CA |
| 2015-10-06 | 442-272-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | INYOKERN | CA |
| 2015-10-05 | 442-255-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | VICTORVL | CA |
| 2015-10-05 | 442-274-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PALMDESERT | CA |
| 2015-10-01 | 442-246-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | MORONGOVLY | CA |
| 2015-09-30 | 442-321-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | HOMESTDVLY | CA |
| 2015-09-28 | 442-278-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VALLEY CTR | CA |
| 2015-09-22 | 442-257-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | ESCONDIDO | CA |
| 2015-09-22 | 442-273-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VISTA | CA |
| 2015-09-17 | 442-278-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | VALLEY CTR | CA |
| 2015-09-11 | 442-246-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MORONGOVLY | CA |
| 2015-09-11 | 442-261-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SHOSHONE | CA |
| 2015-09-10 | 442-293-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BORREGO | CA |
| 2015-09-08 | 442-258-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CENTRO | CA |
| 2015-09-03 | 442-257-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ESCONDIDO | CA |
| 2015-09-03 | 442-257-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ESCONDIDO | CA |
| 2015-09-02 | 442-221-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BENTON | CA |
| 2015-08-28 | 442-278-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VALLEY CTR | CA |
| 2015-08-26 | 442-274-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALMDESERT | CA |
| 2015-08-26 | 442-326-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | INDEPNDNCE | CA |
| 2015-08-21 | 442-243-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | VICTORVL | CA |
| 2015-08-21 | 442-347-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | BARSTOW | CA |
| 2015-08-04 | 442-255-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-07-31 | 442-243-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.