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
2022-10-10 385-746-3XXX 3000–3999Assigned COMMIO, LLC 939H LEHI UT
2022-10-03 385-874-1XXX 1000–1999Assigned ALL WEST/UTAH, INC. 3881 FARMINGTON UT
2022-09-23 385-533-3XXX 3000–3999Assigned COMMIO, LLC 939H CLEARFIELD UT
2022-09-22 385-453-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-453-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-470-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-470-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-470-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-470-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-470-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-470-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2022-09-22 385-471-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2022-09-22 385-475-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2022-09-22 385-475-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2022-09-22 385-475-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2022-09-22 385-475-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2022-09-22 385-526-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLEARFIELD UT
2022-09-21 385-454-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2022-09-21 385-454-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2022-09-21 385-463-0XXX 0000–0999Assigned METROPCS, INC. 5562 MIDVALE UT
2022-09-21 385-463-1XXX 1000–1999Assigned METROPCS, INC. 5562 MIDVALE UT
2022-09-21 385-490-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2022-09-21 385-622-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2022-09-21 385-746-2XXX 2000–2999Assigned METROPCS, INC. 5562 LEHI UT
2022-09-20 385-396-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MURRAY UT
2022-09-20 385-396-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E MURRAY UT
2022-09-20 385-396-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E MURRAY UT
2022-09-20 385-396-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E MURRAY UT
2022-09-20 385-406-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2022-09-20 385-406-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2022-09-20 385-458-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E MORGAN UT
2022-09-20 385-458-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MORGAN UT
2022-09-20 385-458-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E MORGAN UT
2022-09-20 385-462-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-462-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-462-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-462-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-462-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-462-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-462-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-462-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2022-09-20 385-469-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E OGDEN UT
2022-09-20 385-469-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E OGDEN UT
2022-09-20 385-469-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E OGDEN UT
2022-09-20 385-469-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E OGDEN UT
2022-09-20 385-469-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E OGDEN UT
2022-09-20 385-469-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E OGDEN UT
2022-09-20 385-469-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E OGDEN UT
2022-09-20 385-481-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E ALTA UT
2022-09-20 385-481-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E ALTA 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.