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
2013-06-10 442-666-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALMDESERT CA
2013-06-06 442-400-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K INDIO CA
2013-06-06 442-666-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K PALMDESERT CA
2013-06-03 442-220-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT PASS CA
2013-05-29 442-666-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALMDESERT CA
2013-05-28 442-600-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VTVL HSPR CA
2013-05-28 442-600-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VTVL HSPR CA
2013-05-24 442-244-1XXX 1000–1999Assigned METROPCS, INC. 5562 OCSD CRLS CA
2013-05-24 442-999-3XXX 3000–3999Assigned METROPCS, INC. 5562 ESCONDIDO CA
2013-04-23 442-244-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7147 OCSD CRLS CA
2013-04-22 442-224-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K VISTA CA
2013-04-22 442-444-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K FALLBROOK CA
2013-04-22 442-500-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K OCSD OCSD CA
2013-04-16 442-200-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CALEXICO CA
2013-04-15 442-225-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CENTRO CA
2013-04-15 442-225-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CENTRO CA
2013-04-15 442-225-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CENTRO CA
2013-04-15 442-225-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CENTRO CA
2013-04-15 442-225-8XXX 8000–8999Assigned METROPCS, INC. 5562 EL CENTRO CA
2013-04-15 442-225-9XXX 9000–9999Assigned METROPCS, INC. 5562 EL CENTRO CA
2013-04-08 442-242-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VICTORVL CA
2013-04-08 442-242-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VICTORVL CA
2013-04-01 442-244-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K OCSD CRLS CA
2013-03-22 442-400-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K INDIO CA
2013-03-22 442-666-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K PALMDESERT CA
2013-03-19 442-281-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2013-03-19 442-777-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2013-03-04 442-200-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CALEXICO CA
2013-03-04 442-600-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F VTVL HSPR CA
2013-03-04 442-900-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OCOTILLO CA
2013-02-22 442-666-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALMDESERT CA
2013-02-22 442-777-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2013-02-20 442-200-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CALEXICO CA
2013-02-20 442-444-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C FALLBROOK CA
2013-02-20 442-500-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C OCSD OCSD CA
2013-02-20 442-900-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C OCOTILLO CA
2013-02-18 442-600-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D VTVL HSPR CA
2013-02-15 442-777-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2013-02-05 442-300-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C INDIO CA
2013-01-28 442-400-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2013-01-28 442-400-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2013-01-09 442-400-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2012-12-18 442-500-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C OCSD OCSD CA
2012-12-05 442-333-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C OCSD OCSD CA
2012-12-05 442-444-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FALLBROOK CA
2012-12-05 442-444-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C FALLBROOK CA
2012-12-05 442-888-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C OCSD OCSD CA
2012-12-03 442-200-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CALEXICO CA
2012-12-03 442-200-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CALEXICO CA
2012-12-03 442-281-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ESCONDIDO 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.