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
2026-09-18 385-632-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E AMERCNFORK UT
2026-09-16 385-597-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPANIHFORK UT
2026-09-16 385-619-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F OGDEN UT
2026-09-16 385-639-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F KAYSVILLE UT
2026-09-16 385-639-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F KAYSVILLE UT
2026-09-16 385-686-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F BOUNTIFUL UT
2026-09-15 385-641-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2026-09-15 385-641-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2026-09-15 385-641-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2026-09-15 385-641-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2026-09-15 385-641-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2026-09-09 385-738-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2026-09-09 385-738-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2026-09-09 385-738-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2026-09-04 385-597-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2026-08-26 385-594-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLEARFIELD UT
2026-08-20 385-639-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-20 385-639-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-20 385-639-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-20 385-639-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-20 385-639-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-20 385-639-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-20 385-639-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-20 385-639-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2026-08-18 385-604-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2026-08-18 385-618-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2026-08-05 385-638-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-08-05 385-638-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2026-07-24 385-421-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 ALTA UT
2026-07-23 385-619-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OGDEN UT
2026-07-23 385-619-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OGDEN UT
2026-07-23 385-619-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OGDEN UT
2026-07-09 385-594-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - UT 7530 CLEARFIELD UT
2026-07-09 385-595-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2026-07-09 385-599-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2026-07-09 385-618-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2026-07-09 385-621-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F MURRAY UT
2026-07-09 385-738-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F MIDVALE UT
2026-07-09 385-738-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F MIDVALE UT
2026-07-08 385-579-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2026-07-08 385-579-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2026-07-08 385-579-4XXX 4000–4999Assigned 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.