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
2020-01-13 442-279-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-01-10 442-307-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2020-01-10 442-307-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2019-12-23 442-348-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2019-12-23 442-348-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2019-12-23 442-348-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2019-12-23 442-348-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2019-12-23 442-348-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2019-12-23 442-348-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2019-12-19 442-303-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OCSD CRLS CA
2019-12-19 442-336-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F VTVL APVY CA
2019-12-18 442-203-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BRIDGEPORT CA
2019-12-18 442-306-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INDIO CA
2019-12-18 442-309-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BARSTOW CA
2019-12-02 442-290-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PALM SPG CA
2019-12-02 442-305-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PALMDESERT CA
2019-11-18 442-272-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F INYOKERN CA
2019-11-18 442-298-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F TRONA CA
2019-11-15 442-218-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LKISABELLA CA
2019-11-15 442-288-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OCSD PDTN CA
2019-11-15 442-288-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OCSD PDTN CA
2019-11-15 442-313-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HAVASULAKE CA
2019-11-15 442-313-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HAVASULAKE CA
2019-11-14 442-294-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RIDGECREST CA
2019-11-14 442-440-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LENWOOD CA
2019-11-14 442-440-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LENWOOD CA
2019-11-14 442-441-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BRSW YERM CA
2019-11-14 442-441-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BRSW YERM CA
2019-11-14 442-443-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MORONGOVLY CA
2019-11-14 442-443-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MORONGOVLY CA
2019-11-13 442-312-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PINE CREEK CA
2019-11-12 442-276-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PINYON CA
2019-11-04 442-309-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARSTOW CA
2019-10-14 442-279-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2019-10-14 442-279-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2019-10-08 442-312-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PINE CREEK CA
2019-10-02 442-312-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PINE CREEK CA
2019-09-26 442-218-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LKISABELLA CA
2019-09-23 442-250-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALEXICO CA
2019-09-23 442-306-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INDIO CA
2019-09-23 442-306-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INDIO CA
2019-09-05 442-306-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2019-08-21 442-302-0XXX 0000–0999Assigned TELNYX LLC 073H LUCERNEVLY CA
2019-08-16 442-306-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C INDIO CA
2019-08-15 442-214-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TWNTYNPLMS CA
2019-08-14 442-206-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C IMPERIAL CA
2019-08-14 442-345-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HOLTVILLE CA
2019-08-13 442-210-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BIG PINE CA
2019-08-13 442-296-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CROWLEY LK CA
2019-08-13 442-301-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C JUNE LAKE 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.