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
2014-10-27 385-445-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2014-10-27 385-445-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2014-10-27 385-445-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2014-10-27 385-445-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2014-10-23 385-241-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PROVO UT
2014-10-23 385-424-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2014-10-23 385-424-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2014-10-23 385-424-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2014-10-23 385-424-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2014-10-21 385-347-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRAY UT
2014-10-21 385-347-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRAY UT
2014-10-21 385-347-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRAY UT
2014-10-21 385-350-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MORGAN UT
2014-10-20 385-249-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2014-10-20 385-249-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2014-10-20 385-249-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2014-10-20 385-249-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2014-10-20 385-249-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2014-10-15 385-200-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPANIHFORK UT
2014-10-15 385-220-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON UT
2014-10-15 385-255-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2014-10-15 385-255-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2014-10-15 385-255-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2014-10-15 385-495-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2014-10-15 385-495-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2014-10-15 385-495-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2014-10-15 385-495-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2014-10-15 385-495-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2014-10-15 385-519-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLEARFIELD UT
2014-10-15 385-519-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLEARFIELD UT
2014-10-15 385-549-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2014-10-15 385-777-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOUNTIFUL UT
2014-10-15 385-777-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOUNTIFUL UT
2014-10-10 385-269-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLEASATGRV UT
2014-10-07 385-255-1XXX 1000–1999Assigned FIRSTDIGITAL TELECOM, LLC - UT 5727 MIDVALE UT
2014-10-07 385-255-2XXX 2000–2999Assigned FIRSTDIGITAL TELECOM, LLC - UT 5727 MIDVALE UT
2014-10-07 385-255-3XXX 3000–3999Assigned FIRSTDIGITAL TELECOM, LLC - UT 5727 MIDVALE UT
2014-10-07 385-255-4XXX 4000–4999Assigned FIRSTDIGITAL TELECOM, LLC - UT 5727 MIDVALE UT
2014-10-07 385-255-5XXX 5000–5999Assigned FIRSTDIGITAL TELECOM, LLC - UT 5727 MIDVALE UT
2014-10-02 385-404-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E PAYSON UT
2014-10-02 385-404-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E PAYSON UT
2014-10-01 385-220-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2014-10-01 385-220-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2014-10-01 385-241-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PROVO UT
2014-10-01 385-831-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2014-10-01 385-831-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2014-10-01 385-999-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2014-10-01 385-999-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2014-09-30 385-231-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E KAYSVILLE UT
2014-09-30 385-231-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E 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.