NumberResearchRecent thousands-block assignments
34 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 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 |
|---|---|---|---|---|---|---|---|
| 2015-04-24 | 442-324-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | INDIO | CA |
| 2015-04-22 | 442-257-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | ESCONDIDO | CA |
| 2015-04-15 | 442-262-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | OCSD OCSD | CA |
| 2015-04-15 | 442-262-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | OCSD OCSD | CA |
| 2015-04-15 | 442-262-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | OCSD OCSD | CA |
| 2015-04-15 | 442-262-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | OCSD OCSD | CA |
| 2015-04-15 | 442-262-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | OCSD OCSD | CA |
| 2015-04-15 | 442-262-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA |
| 2015-04-15 | 442-347-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | BARSTOW | CA |
| 2015-04-15 | 442-347-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | BARSTOW | CA |
| 2015-04-14 | 442-456-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | EL CENTRO | CA |
| 2015-04-10 | 442-251-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VTVL HSPR | CA |
| 2015-04-07 | 442-247-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CALIFORNCY | CA |
| 2015-04-07 | 442-249-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL ADLN | CA |
| 2015-03-26 | 442-249-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | VTVL ADLN | CA |
| 2015-03-24 | 442-253-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CALIPATRIA | CA |
| 2015-03-18 | 442-264-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | OCSD OCSD | CA |
| 2015-03-18 | 442-264-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | OCSD OCSD | CA |
| 2015-03-17 | 442-258-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CENTRO | CA |
| 2015-03-17 | 442-258-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CENTRO | CA |
| 2015-03-17 | 442-258-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CENTRO | CA |
| 2015-03-17 | 442-258-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CENTRO | CA |
| 2015-03-16 | 442-251-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | VTVL HSPR | CA |
| 2015-03-16 | 442-274-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PALMDESERT | CA |
| 2015-03-16 | 442-324-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | INDIO | CA |
| 2015-03-13 | 442-284-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-03-13 | 442-284-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-03-13 | 442-284-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-03-13 | 442-284-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-03-13 | 442-615-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA |
| 2015-03-13 | 442-615-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA |
| 2015-03-10 | 442-229-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-03-09 | 442-273-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | VISTA | CA |
| 2015-03-09 | 442-273-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | VISTA | CA |
| 2015-03-09 | 442-273-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VISTA | CA |
| 2015-03-05 | 442-256-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | INDIO | CA |
| 2015-03-05 | 442-274-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PALMDESERT | CA |
| 2015-03-02 | 442-271-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL CENTRO | CA |
| 2015-03-02 | 442-271-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | EL CENTRO | CA |
| 2015-02-25 | 442-232-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OCSD CRLS | CA |
| 2015-02-19 | 442-234-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PALM SPG | CA |
| 2015-02-19 | 442-234-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PALM SPG | CA |
| 2015-02-19 | 442-234-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PALM SPG | CA |
| 2015-02-19 | 442-234-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PALM SPG | CA |
| 2015-02-11 | 442-251-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | VTVL HSPR | CA |
| 2015-02-11 | 442-251-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | VTVL HSPR | CA |
| 2015-02-11 | 442-251-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | VTVL HSPR | CA |
| 2015-02-09 | 442-252-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CALEXICO | CA |
| 2015-01-30 | 442-232-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OCSD CRLS | CA |
| 2015-01-30 | 442-271-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL CENTRO | 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.