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
2019-09-18 385-332-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-09-18 385-332-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-09-18 385-332-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-09-05 385-401-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2019-09-05 385-401-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2019-09-05 385-401-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2019-09-05 385-401-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2019-08-29 385-420-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2019-08-29 385-799-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2019-08-27 385-799-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2019-08-27 385-799-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2019-08-22 385-401-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-08-22 385-401-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-08-22 385-401-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-08-22 385-401-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-08-13 385-412-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E PROVO UT
2019-08-13 385-412-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E PROVO UT
2019-08-09 385-308-9XXX 9000–9999Assigned METROPCS, INC. 5562 MIDVALE UT
2019-08-09 385-324-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOUNTIFUL UT
2019-08-09 385-349-3XXX 3000–3999Assigned METROPCS, INC. 5562 PROVO UT
2019-08-07 385-283-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E PROVO UT
2019-08-07 385-308-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2019-08-07 385-308-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2019-08-07 385-308-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2019-08-07 385-308-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2019-08-07 385-308-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2019-08-07 385-308-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2019-08-07 385-332-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E KAYSVILLE UT
2019-08-07 385-332-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E KAYSVILLE UT
2019-08-07 385-332-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E KAYSVILLE UT
2019-08-07 385-334-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E AMERCNFORK UT
2019-08-07 385-349-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2019-08-07 385-420-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2019-08-07 385-432-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E OGDEN UT
2019-08-07 385-432-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E OGDEN UT
2019-08-07 385-432-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E OGDEN UT
2019-08-05 385-423-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLEARFIELD UT
2019-08-05 385-485-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRAY UT
2019-08-01 385-450-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2019-07-24 385-308-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - UT 7530 MIDVALE UT
2019-07-17 385-398-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-07-17 385-398-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-07-17 385-398-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-07-17 385-398-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-07-17 385-398-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-07-17 385-398-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-07-17 385-398-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-07-16 385-332-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2019-07-11 385-308-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2019-07-11 385-334-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK 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.