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
2021-09-01 385-431-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-09-01 385-431-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-09-01 385-431-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-30 385-409-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2021-08-30 385-409-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2021-08-30 385-789-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2021-08-30 385-789-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2021-08-30 385-789-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2021-08-30 385-789-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2021-08-30 385-789-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2021-08-27 385-667-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-27 385-667-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-27 385-667-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-27 385-667-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-27 385-667-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-27 385-667-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-27 385-667-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2021-08-27 385-899-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PAYSON UT
2021-08-27 385-899-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PAYSON UT
2021-08-27 385-899-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PAYSON UT
2021-08-27 385-899-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PAYSON UT
2021-08-27 385-899-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PAYSON UT
2021-08-25 385-567-8XXX 8000–8999Assigned FRACTEL, LLC 965H PROVO UT
2021-08-25 385-789-9XXX 9000–9999Assigned FRACTEL, LLC 965H LEHI UT
2021-08-18 385-853-4XXX 4000–4999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PLEASATGRV UT
2021-08-18 385-853-6XXX 6000–6999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PLEASATGRV UT
2021-08-10 385-488-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2021-08-09 385-766-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 ALTA UT
2021-07-29 385-409-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-409-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-409-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-409-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-409-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-409-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-409-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-409-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-410-0XXX 0000–0999Assigned TELNYX LLC 073H MORGAN UT
2021-07-29 385-413-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-413-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2021-07-29 385-732-0XXX 0000–0999Assigned COMMIO, LLC 939H OGDEN UT
2021-07-29 385-732-2XXX 2000–2999Assigned COMMIO, LLC 939H OGDEN UT
2021-07-29 385-732-8XXX 8000–8999Assigned COMMIO, LLC 939H OGDEN 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.