NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

16 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 385
LEVEL 3 COMMUNICATIONS, LLC - UT 5
BANDWIDTH.COM CLEC, LLC - UT 5
NEW CINGULAR WIRELESS PCS, LLC 4
ONVOY, LLC - UT 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
2020-12-18 385-372-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-372-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-18 385-397-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-12-11 385-438-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2020-12-11 385-438-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2020-11-27 385-373-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-27 385-373-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-20 385-317-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E MORGAN UT
2020-11-20 385-317-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E MORGAN UT
2020-11-20 385-365-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E AMERCNFORK UT
2020-11-20 385-365-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E AMERCNFORK UT
2020-11-19 385-363-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-19 385-363-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-19 385-382-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-11-11 385-316-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F FARMINGTON UT
2020-11-05 385-595-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E SPRINGVL UT
2020-11-05 385-595-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E SPRINGVL UT
2020-11-04 385-360-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-11-04 385-360-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-11-04 385-360-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-11-04 385-360-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-11-04 385-360-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-11-04 385-380-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-11-04 385-380-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-11-04 385-380-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-11-04 385-380-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.