NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

34 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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 CINGULAR WIRELESS PCS, LLC 14
ONVOY, LLC - CA 10
HD CARRIER LLC 4
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2015-01-29 442-264-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OCSD OCSD CA
2015-01-29 442-264-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OCSD OCSD CA
2015-01-29 442-264-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OCSD OCSD CA
2015-01-29 442-271-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2015-01-16 442-256-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2015-01-16 442-256-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2015-01-16 442-271-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CENTRO CA
2015-01-13 442-241-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2014-12-26 442-241-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F INDIO CA
2014-12-16 442-235-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D BARSTOW CA
2014-12-09 442-243-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2014-12-03 442-227-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C PALMDESERT CA
2014-12-03 442-227-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C PALMDESERT CA
2014-12-01 442-254-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C FALLBROOK CA
2014-12-01 442-254-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C FALLBROOK CA
2014-12-01 442-254-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C FALLBROOK CA
2014-11-26 442-241-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C INDIO CA
2014-11-26 442-241-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C INDIO CA
2014-11-26 442-241-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2014-11-26 442-241-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2014-11-26 442-241-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2014-11-26 442-241-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2014-11-25 442-283-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C EL CENTRO CA
2014-11-25 442-283-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C EL CENTRO CA
2014-11-24 442-251-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D VTVL HSPR CA
2014-11-24 442-251-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VTVL HSPR CA
2014-11-24 442-800-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VTVL HSPR CA
2014-11-20 442-245-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C VISTA CA
2014-11-20 442-248-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2014-11-20 442-248-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2014-11-20 442-283-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2014-11-20 442-283-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2014-11-19 442-241-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 INDIO CA
2014-11-18 442-283-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K EL CENTRO CA
2014-11-13 442-226-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRAWLEY CA
2014-11-13 442-252-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CALEXICO CA
2014-11-11 442-261-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHOSHONE CA
2014-11-10 442-265-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-265-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CENTRO CA
2014-11-10 442-283-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CENTRO CA
2014-11-10 442-283-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CENTRO CA
2014-11-10 442-283-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 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.