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 |
|---|---|---|---|---|---|---|---|
| 2022-10-10 | 442-390-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ENCINITAS | CA |
| 2022-10-05 | 442-677-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALMDESERT | CA |
| 2022-09-19 | 442-367-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | CALEXICO | CA |
| 2022-09-19 | 442-378-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FALLBROOK | CA |
| 2022-09-19 | 442-423-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | LKISABELLA | CA |
| 2022-09-19 | 442-667-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | INYOKERN | CA |
| 2022-09-19 | 442-842-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | INDEPNDNCE | CA |
| 2022-09-16 | 442-655-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MARCOS | CA |
| 2022-08-26 | 442-443-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | MORONGOVLY | CA |
| 2022-08-26 | 442-677-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | PALMDESERT | CA |
| 2022-08-26 | 442-677-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | PALMDESERT | CA |
| 2022-08-26 | 442-788-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | DSERTHTSPG | CA |
| 2022-08-26 | 442-788-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | DSERTHTSPG | CA |
| 2022-08-26 | 442-822-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | INDIO | CA |
| 2022-08-26 | 442-822-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | INDIO | CA |
| 2022-08-26 | 442-822-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | INDIO | CA |
| 2022-08-18 | 442-375-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA |
| 2022-08-18 | 442-375-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA |
| 2022-08-17 | 442-855-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL APVY | CA |
| 2022-08-17 | 442-855-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL APVY | CA |
| 2022-08-17 | 442-855-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL APVY | CA |
| 2022-08-11 | 442-372-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OCSD CRLS | CA |
| 2022-08-11 | 442-372-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OCSD CRLS | CA |
| 2022-08-09 | 442-386-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VICTORVL | CA |
| 2022-08-09 | 442-386-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VICTORVL | CA |
| 2022-08-09 | 442-533-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VICTORVL | CA |
| 2022-08-09 | 442-533-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VICTORVL | CA |
| 2022-08-09 | 442-533-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VICTORVL | CA |
| 2022-08-09 | 442-533-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VICTORVL | CA |
| 2022-08-09 | 442-533-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VICTORVL | CA |
| 2022-08-05 | 442-385-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MARCOS | CA |
| 2022-08-05 | 442-385-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MARCOS | CA |
| 2022-08-05 | 442-385-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MARCOS | CA |
| 2022-07-29 | 442-316-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL HSPR | CA |
| 2022-07-29 | 442-316-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL HSPR | CA |
| 2022-07-29 | 442-356-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL HSPR | CA |
| 2022-07-29 | 442-356-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL HSPR | CA |
| 2022-07-29 | 442-356-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VTVL HSPR | CA |
| 2022-07-28 | 442-391-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WINTERHVN | CA |
| 2022-07-27 | 442-367-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CALEXICO | CA |
| 2022-07-27 | 442-367-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CALEXICO | CA |
| 2022-07-21 | 442-305-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALMDESERT | CA |
| 2022-07-14 | 442-390-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ENCINITAS | CA |
| 2022-07-14 | 442-390-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ENCINITAS | CA |
| 2022-07-14 | 442-390-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ENCINITAS | CA |
| 2022-07-13 | 442-369-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ENCINITAS | CA |
| 2022-07-13 | 442-387-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SALTON | CA |
| 2022-07-13 | 442-387-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SALTON | CA |
| 2022-07-13 | 442-568-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ENCINITAS | CA |
| 2022-07-07 | 442-372-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | OCSD CRLS | 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.