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
2023-09-18 442-403-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C DSERTHTSPG CA
2023-09-18 442-404-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C VISTA CA
2023-09-18 442-404-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C VISTA CA
2023-09-18 442-407-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PALM SPG CA
2023-09-18 442-407-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C PALM SPG CA
2023-09-18 442-544-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2023-09-18 442-544-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2023-09-13 442-566-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VALLEY CTR CA
2023-09-12 442-414-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-09-12 442-414-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-09-12 442-414-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-09-11 442-417-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CALIFORNCY CA
2023-08-29 442-417-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALIFORNCY CA
2023-08-29 442-418-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALMDESERT CA
2023-08-22 442-427-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OCSD CRLS CA
2023-08-16 442-416-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN MARCOS CA
2023-08-11 442-414-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-08-11 442-414-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-08-11 442-414-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-08-11 442-414-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-08-11 442-414-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2023-08-10 442-340-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2023-08-10 442-413-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2023-08-09 442-412-0XXX 0000–0999Assigned COMMIO, LLC 939H BRAWLEY CA
2023-08-09 442-412-1XXX 1000–1999Assigned COMMIO, LLC 939H BRAWLEY CA
2023-08-09 442-412-2XXX 2000–2999Assigned COMMIO, LLC 939H BRAWLEY CA
2023-08-09 442-412-3XXX 3000–3999Assigned COMMIO, LLC 939H BRAWLEY CA
2023-08-09 442-412-4XXX 4000–4999Assigned COMMIO, LLC 939H BRAWLEY CA
2023-08-08 442-404-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7147 VISTA CA
2023-07-28 442-399-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL MIRAGE CA
2023-07-28 442-399-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL MIRAGE CA
2023-07-25 442-401-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-401-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2023-07-25 442-404-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2023-07-25 442-404-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VISTA CA
2023-07-21 442-328-1XXX 1000–1999Assigned COMMIO, LLC 939H LONE PINE CA
2023-07-21 442-328-2XXX 2000–2999Assigned COMMIO, LLC 939H LONE PINE CA
2023-07-21 442-328-4XXX 4000–4999Assigned COMMIO, LLC 939H LONE PINE CA
2023-07-21 442-328-8XXX 8000–8999Assigned COMMIO, LLC 939H LONE PINE CA
2023-07-21 442-328-9XXX 9000–9999Assigned COMMIO, LLC 939H LONE PINE CA
2023-07-13 442-944-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2023-07-13 442-944-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2023-07-12 442-358-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RAMONA 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.