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
2020-12-01 442-343-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-12-01 442-343-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-12-01 442-343-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-12-01 442-343-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-12-01 442-343-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-341-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-27 442-341-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-27 442-341-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-27 442-341-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-27 442-341-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-27 442-955-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-955-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-955-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-955-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-955-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-955-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-955-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-27 442-955-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-11-24 442-331-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-340-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-11-24 442-340-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-11-24 442-488-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-24 442-488-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-11-19 442-230-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-11-19 442-322-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-11-17 442-955-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F VICTORVL CA
2020-11-15 442-423-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LKISABELLA CA
2020-11-15 442-742-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SUMMIT VLY CA
2020-11-15 442-742-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SUMMIT VLY CA
2020-11-15 442-742-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SUMMIT VLY CA
2020-11-14 442-335-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-335-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-338-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-338-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG CA
2020-11-14 442-338-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALM SPG 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.