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
2020-09-18 442-488-8XXX 8000–8999Assigned FRACTEL, LLC 965H ESCONDIDO CA
2020-09-18 442-786-7XXX 7000–7999Assigned FRACTEL, LLC 965H BLYTHE CA
2020-09-17 442-432-8XXX 8000–8999Assigned FRACTEL, LLC 965H CALEXICO CA
2020-09-17 442-499-9XXX 9000–9999Assigned FRACTEL, LLC 965H FORT IRWIN CA
2020-09-17 442-588-8XXX 8000–8999Assigned FRACTEL, LLC 965H HOMESTDVLY CA
2020-09-17 442-599-9XXX 9000–9999Assigned FRACTEL, LLC 965H INDIO CA
2020-09-14 442-320-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2020-09-14 442-320-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2020-09-10 442-946-0XXX 0000–0999Assigned TELNYX LLC 073H EARP LSLK CA
2020-09-09 442-238-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2020-09-09 442-238-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2020-09-09 442-291-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2020-09-09 442-332-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-09-09 442-332-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-09-09 442-332-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-09-09 442-332-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-09-09 442-332-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-09-08 442-331-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-08 442-331-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-04 442-329-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-04 442-329-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-04 442-329-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-04 442-329-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-04 442-329-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-04 442-350-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-09-03 442-322-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRAWLEY CA
2020-09-03 442-322-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRAWLEY CA
2020-09-01 442-529-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2020-08-27 442-380-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2020-08-27 442-380-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2020-08-27 442-515-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SAN MARCOS CA
2020-08-25 442-320-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ENCINITAS CA
2020-08-19 442-320-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ENCINITAS CA
2020-08-18 442-339-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7147 OCSD CRLS CA
2020-08-18 442-339-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7147 OCSD CRLS CA
2020-08-18 442-440-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LENWOOD CA
2020-08-14 442-206-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 IMPERIAL CA
2020-08-14 442-218-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LKISABELLA CA
2020-08-13 442-329-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-08-13 442-329-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-08-13 442-329-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-08-13 442-329-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-08-13 442-329-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.