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
2021-05-14 442-933-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2021-05-09 442-291-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2021-05-09 442-291-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2021-05-09 442-291-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2021-05-09 442-316-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VTVL HSPR CA
2021-05-09 442-677-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALMDESERT CA
2021-05-05 442-742-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUMMIT VLY CA
2021-05-04 442-388-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DESERT CTR CA
2021-05-04 442-966-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RIDGECREST CA
2021-04-29 442-432-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CALEXICO CA
2021-04-28 442-432-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALEXICO CA
2021-04-26 442-336-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H VTVL APVY CA
2021-04-23 442-466-6XXX 6000–6999Assigned FRACTEL, LLC 965H OCSD PDTN CA
2021-04-23 442-933-3XXX 3000–3999Assigned FRACTEL, LLC 965H INDIO CA
2021-04-22 442-433-3XXX 3000–3999Assigned FRACTEL, LLC 965H BRAWLEY CA
2021-04-22 442-755-5XXX 5000–5999Assigned FRACTEL, LLC 965H VICTORVL CA
2021-04-17 442-216-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2021-04-15 442-683-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J HOMESTDVLY CA
2021-04-15 442-688-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J PALO VERDE CA
2021-04-13 442-319-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CALIFORNCY CA
2021-04-13 442-319-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C CALIFORNCY CA
2021-04-13 442-542-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C NEEDLES CA
2021-04-13 442-542-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C NEEDLES CA
2021-04-09 442-357-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2021-04-09 442-357-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2021-04-09 442-357-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2021-04-09 442-357-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2021-04-02 442-357-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ENCINITAS CA
2021-03-30 442-305-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PALMDESERT CA
2021-03-26 442-354-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRAWLEY CA
2021-03-26 442-386-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2021-03-26 442-529-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2021-03-26 442-529-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2021-03-26 442-529-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2021-03-26 442-599-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2021-03-24 442-355-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2021-03-24 442-758-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 OLANCHA CA
2021-03-23 442-320-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ENCINITAS CA
2021-03-23 442-529-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INDIO CA
2021-03-23 442-966-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIDGECREST CA
2021-03-23 442-966-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIDGECREST CA
2021-03-22 442-341-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2021-03-22 442-877-0XXX 0000–0999Assigned METROPCS, INC. 5562 ESCONDIDO CA
2021-03-22 442-877-1XXX 1000–1999Assigned METROPCS, INC. 5562 ESCONDIDO CA
2021-03-19 442-667-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 INYOKERN CA
2021-03-18 442-217-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VALLEY CTR CA
2021-03-17 442-214-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TWNTYNPLMS CA
2021-03-17 442-319-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALIFORNCY CA
2021-03-17 442-319-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALIFORNCY CA
2021-03-17 442-799-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TWNTYNPLMS 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.