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
2018-05-01 385-867-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-05-01 385-867-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-04-27 385-422-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2018-04-27 385-492-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F OGDEN UT
2018-04-23 385-437-7XXX 7000–7999Assigned QWEST CORPORATION 9636 SPANIHFORK UT
2018-04-18 385-337-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2018-04-18 385-367-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E CLEARFIELD UT
2018-04-18 385-492-9XXX 9000–9999Assigned METROPCS, INC. 5562 OGDEN UT
2018-04-13 385-447-2XXX 2000–2999Assigned METROPCS, INC. 5562 PROVO UT
2018-04-13 385-447-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PROVO UT
2018-04-12 385-337-0XXX 0000–0999Assigned METROPCS, INC. 5562 MIDVALE UT
2018-04-12 385-465-0XXX 0000–0999Assigned METROPCS, INC. 5562 SALT LAKE UT
2018-04-12 385-465-8XXX 8000–8999Assigned METROPCS, INC. 5562 SALT LAKE UT
2018-04-12 385-465-9XXX 9000–9999Assigned METROPCS, INC. 5562 SALT LAKE UT
2018-04-12 385-484-2XXX 2000–2999Assigned METROPCS, INC. 5562 LEHI UT
2018-03-29 385-260-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2018-03-29 385-666-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 PROVO UT
2018-03-26 385-367-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E CLEARFIELD UT
2018-03-20 385-447-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2018-03-20 385-447-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2018-03-20 385-447-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2018-03-20 385-447-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2018-03-20 385-447-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2018-03-14 385-293-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2018-03-14 385-484-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2018-03-13 385-484-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2018-02-28 385-279-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2018-02-28 385-466-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2018-02-28 385-466-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2018-02-28 385-466-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2018-02-28 385-466-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2018-02-22 385-465-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-465-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-22 385-522-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2018-02-16 385-787-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2018-02-05 385-260-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2018-02-05 385-260-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2018-02-05 385-260-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2018-01-31 385-278-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2018-01-30 385-278-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KAYSVILLE UT
2018-01-22 385-485-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - UT 7530 MURRAY UT
2018-01-22 385-485-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - UT 7530 MURRAY UT
2018-01-22 385-485-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - UT 7530 MURRAY 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.