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 |
|---|---|---|---|---|---|---|---|
| 2015-07-31 | 442-285-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALIFORNCY | CA |
| 2015-07-31 | 442-285-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALIFORNCY | CA |
| 2015-07-31 | 442-324-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | INDIO | CA |
| 2015-07-31 | 442-324-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | INDIO | CA |
| 2015-07-30 | 442-456-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-07-30 | 442-456-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-07-30 | 442-456-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-07-29 | 442-325-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | OCSD CRLS | CA |
| 2015-07-24 | 442-324-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | INDIO | CA |
| 2015-07-21 | 442-245-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VISTA | CA |
| 2015-07-21 | 442-273-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VISTA | CA |
| 2015-07-21 | 442-324-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INDIO | CA |
| 2015-07-21 | 442-324-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INDIO | CA |
| 2015-07-16 | 442-262-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | OCSD OCSD | CA |
| 2015-07-16 | 442-324-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | INDIO | CA |
| 2015-07-15 | 442-325-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OCSD CRLS | CA |
| 2015-07-08 | 442-245-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VISTA | CA |
| 2015-07-07 | 442-285-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALIFORNCY | CA |
| 2015-07-07 | 442-326-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | INDEPNDNCE | CA |
| 2015-07-01 | 442-252-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | CALEXICO | CA |
| 2015-07-01 | 442-254-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FALLBROOK | CA |
| 2015-07-01 | 442-258-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL CENTRO | CA |
| 2015-07-01 | 442-258-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL CENTRO | CA |
| 2015-07-01 | 442-274-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PALMDESERT | CA |
| 2015-07-01 | 442-324-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | INDIO | CA |
| 2015-06-23 | 442-456-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-06-22 | 442-257-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ESCONDIDO | CA |
| 2015-06-19 | 442-253-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CALIPATRIA | CA |
| 2015-06-19 | 442-274-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PALMDESERT | CA |
| 2015-06-16 | 442-272-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | INYOKERN | CA |
| 2015-06-16 | 442-325-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OCSD CRLS | CA |
| 2015-06-11 | 442-233-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LENWOOD | CA |
| 2015-06-11 | 442-321-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HOMESTDVLY | CA |
| 2015-06-10 | 442-246-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MORONGOVLY | CA |
| 2015-06-10 | 442-321-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | HOMESTDVLY | CA |
| 2015-06-08 | 442-456-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-06-03 | 442-254-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FALLBROOK | CA |
| 2015-06-03 | 442-456-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL CENTRO | CA |
| 2015-05-28 | 442-243-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VICTORVL | CA |
| 2015-05-28 | 442-284-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VICTORVL | CA |
| 2015-05-28 | 442-284-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VICTORVL | CA |
| 2015-05-18 | 442-284-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-05-18 | 442-284-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-05-18 | 442-284-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-05-18 | 442-284-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-05-13 | 442-232-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OCSD CRLS | CA |
| 2015-05-05 | 442-274-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PALMDESERT | CA |
| 2015-05-05 | 442-274-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PALMDESERT | CA |
| 2015-04-29 | 442-251-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | VTVL HSPR | CA |
| 2015-04-24 | 442-264-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OCSD OCSD | 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.