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
2021-02-02 442-304-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C EAGLE MT CA
2021-02-02 442-388-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C DESERT CTR CA
2021-02-02 442-388-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C DESERT CTR CA
2021-01-29 442-515-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SAN MARCOS CA
2021-01-28 442-312-0XXX 0000–0999Assigned TELNYX LLC 073H PINE CREEK CA
2021-01-28 442-441-1XXX 1000–1999Assigned TELNYX LLC 073H BRSW YERM CA
2021-01-28 442-744-0XXX 0000–0999Assigned TELNYX LLC 073H BRIDGEPORT CA
2021-01-26 442-599-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2021-01-26 442-599-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2021-01-20 442-499-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FORT IRWIN CA
2021-01-14 442-339-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2021-01-14 442-339-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2021-01-14 442-339-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2021-01-13 442-205-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 YUCCA VLY CA
2021-01-12 442-342-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PALM SPG CA
2021-01-12 442-342-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PALM SPG CA
2021-01-12 442-342-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PALM SPG CA
2021-01-12 442-353-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2021-01-12 442-353-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2021-01-11 442-340-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-01-11 442-340-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-01-11 442-340-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-01-11 442-340-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-01-11 442-340-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-01-11 442-340-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-01-08 442-899-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WARNER SPG CA
2021-01-06 442-231-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2021-01-06 442-231-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2021-01-06 442-231-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2021-01-06 442-231-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2021-01-06 442-231-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2021-01-06 442-231-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2021-01-04 442-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H OCOTILLO CA
2020-12-30 442-667-8XXX 8000–8999Assigned FRACTEL, LLC 965H INYOKERN CA
2020-12-22 442-899-9XXX 9000–9999Assigned FRACTEL, LLC 965H WARNER SPG CA
2020-12-17 442-349-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-349-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-351-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-351-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-351-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-351-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2020-12-17 442-351-4XXX 4000–4999Assigned 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.