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
2013-02-05 385-722-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2013-01-30 385-722-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALT LAKE UT
2013-01-29 385-210-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-01-29 385-210-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-01-29 385-210-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-01-29 385-210-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-01-29 385-210-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-01-16 385-207-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2013-01-16 385-207-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2013-01-02 385-223-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-01-02 385-223-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-01-02 385-223-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-01-02 385-223-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2012-12-28 385-215-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2012-12-28 385-259-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2012-12-28 385-259-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2012-12-28 385-259-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2012-12-20 385-209-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J KAYSVILLE UT
2012-12-20 385-229-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SALT LAKE UT
2012-12-14 385-225-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2012-12-12 385-206-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J OGDEN UT
2012-12-04 385-336-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E LEHI UT
2012-12-04 385-336-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E LEHI UT
2012-12-04 385-336-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E LEHI UT
2012-12-04 385-336-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E LEHI UT
2012-12-04 385-336-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E LEHI UT
2012-12-04 385-399-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2012-12-04 385-399-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2012-12-04 385-399-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2012-11-28 385-227-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SALT LAKE UT
2012-11-28 385-229-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SALT LAKE UT
2012-11-21 385-200-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2012-11-21 385-200-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2012-11-21 385-200-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E SPANIHFORK UT
2012-11-21 385-203-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E PROVO UT
2012-11-21 385-222-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2012-11-21 385-222-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2012-11-21 385-225-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E PROVO UT
2012-11-21 385-233-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E PLEASATGRV UT
2012-11-21 385-233-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E PLEASATGRV UT
2012-11-21 385-233-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E PLEASATGRV UT
2012-11-21 385-233-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E PLEASATGRV UT
2012-11-21 385-333-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E OGDEN UT
2012-11-21 385-333-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E OGDEN UT
2012-11-21 385-474-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E MURRAY UT
2012-11-21 385-474-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E MURRAY UT
2012-11-21 385-474-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E MURRAY UT
2012-11-21 385-777-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2012-11-21 385-777-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2012-11-21 385-800-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E MURRAY 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.