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
2023-06-12 385-540-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-12 385-540-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-12 385-540-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-506-0XXX 0000–0999Assigned TELNYX LLC 073H MIDVALE UT
2023-06-09 385-530-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-530-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-536-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2023-06-09 385-537-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-537-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-537-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-537-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-537-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-537-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-537-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-09 385-667-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2023-06-01 385-410-8XXX 8000–8999Assigned TELNYX LLC 073H MORGAN UT
2023-05-31 385-534-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2023-05-31 385-534-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2023-05-31 385-534-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2023-05-31 385-534-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2023-05-31 385-534-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2023-05-31 385-534-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2023-05-26 385-476-8XXX 8000–8999Assigned TELNYX LLC 073H PROVO UT
2023-05-25 385-476-9XXX 9000–9999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H PROVO UT
2023-05-24 385-521-0XXX 0000–0999Assigned TELNYX LLC 073H SPANIHFORK UT
2023-05-23 385-510-1XXX 1000–1999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H LEHI UT
2023-05-22 385-478-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2023-05-16 385-410-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 MORGAN UT
2023-05-15 385-486-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2023-05-15 385-486-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2023-05-15 385-530-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-15 385-530-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-15 385-531-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-15 385-531-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-15 385-531-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-15 385-531-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-15 385-531-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-15 385-531-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-08 385-486-0XXX 0000–0999Assigned TELNYX LLC 073H BOUNTIFUL UT
2023-05-05 385-503-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOUNTIFUL UT
2023-05-05 385-532-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2023-05-05 385-532-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2023-05-05 385-532-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE 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.