NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

16 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 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
2016-06-30 385-441-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-30 385-441-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-30 385-441-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-30 385-441-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-30 385-441-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-30 385-441-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-30 385-441-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-30 385-441-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-29 385-263-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E ALTA UT
2016-06-29 385-268-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PROVO UT
2016-06-28 385-262-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J KAYSVILLE UT
2016-06-28 385-455-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2016-06-28 385-489-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOUNTIFUL UT
2016-06-27 385-298-2XXX 2000–2999Assigned METROPCS, INC. 5562 OGDEN UT
2016-06-23 385-268-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-06-23 385-268-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-06-23 385-268-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-06-23 385-268-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-06-22 385-499-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-20 385-389-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2016-06-20 385-499-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-20 385-499-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-20 385-499-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-20 385-499-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-06-15 385-489-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F BOUNTIFUL UT
2016-06-13 385-499-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2016-06-13 385-499-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2016-06-13 385-499-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2016-06-07 385-297-2XXX 2000–2999Assigned QWEST CORPORATION 9636 SALT LAKE UT
2016-06-07 385-297-3XXX 3000–3999Assigned QWEST CORPORATION 9636 SALT LAKE UT
2016-06-07 385-297-4XXX 4000–4999Assigned QWEST CORPORATION 9636 SALT LAKE UT
2016-06-07 385-297-5XXX 5000–5999Assigned QWEST CORPORATION 9636 SALT LAKE UT
2016-06-07 385-297-6XXX 6000–6999Assigned QWEST CORPORATION 9636 SALT LAKE UT
2016-05-31 385-268-4XXX 4000–4999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PROVO UT
2016-05-31 385-268-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PROVO UT
2016-05-31 385-268-6XXX 6000–6999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PROVO UT
2016-05-25 385-253-4XXX 4000–4999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D MIDVALE UT
2016-05-25 385-253-6XXX 6000–6999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D MIDVALE UT
2016-05-25 385-253-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D MIDVALE UT
2016-05-23 385-251-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2016-05-20 385-250-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-05-20 385-250-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-05-20 385-250-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2016-05-20 385-253-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDVALE UT
2016-05-11 385-251-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2016-05-03 385-389-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2016-05-02 385-258-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-05-02 385-258-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-05-02 385-258-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2016-05-02 385-258-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT

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.