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
2014-07-14 385-239-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2014-07-11 385-695-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F MIDVALE UT
2014-07-10 385-230-0XXX 0000–0999Assigned METROPCS, INC. 5562 PROVO UT
2014-07-10 385-230-1XXX 1000–1999Assigned METROPCS, INC. 5562 PROVO UT
2014-07-10 385-230-9XXX 9000–9999Assigned METROPCS, INC. 5562 PROVO UT
2014-07-10 385-299-0XXX 0000–0999Assigned METROPCS, INC. 5562 SALT LAKE UT
2014-07-10 385-299-1XXX 1000–1999Assigned METROPCS, INC. 5562 SALT LAKE UT
2014-07-10 385-299-2XXX 2000–2999Assigned METROPCS, INC. 5562 SALT LAKE UT
2014-07-10 385-299-3XXX 3000–3999Assigned METROPCS, INC. 5562 SALT LAKE UT
2014-07-10 385-299-4XXX 4000–4999Assigned METROPCS, INC. 5562 SALT LAKE UT
2014-07-10 385-299-9XXX 9000–9999Assigned METROPCS, INC. 5562 SALT LAKE UT
2014-07-08 385-405-0XXX 0000–0999Assigned METROPCS, INC. 5562 OGDEN UT
2014-07-08 385-405-1XXX 1000–1999Assigned METROPCS, INC. 5562 OGDEN UT
2014-07-08 385-405-3XXX 3000–3999Assigned METROPCS, INC. 5562 OGDEN UT
2014-07-08 385-519-9XXX 9000–9999Assigned METROPCS, INC. 5562 CLEARFIELD UT
2014-07-07 385-345-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LEHI UT
2014-07-03 385-236-7XXX 7000–7999Assigned METROPCS, INC. 5562 PROVO UT
2014-07-03 385-336-9XXX 9000–9999Assigned METROPCS, INC. 5562 LEHI UT
2014-07-03 385-345-5XXX 5000–5999Assigned METROPCS, INC. 5562 LEHI UT
2014-07-03 385-887-4XXX 4000–4999Assigned METROPCS, INC. 5562 MIDVALE UT
2014-07-02 385-393-9XXX 9000–9999Assigned METROPCS, INC. 5562 CLEARFIELD UT
2014-07-01 385-405-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OGDEN UT
2014-06-30 385-355-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SALT LAKE UT
2014-06-30 385-528-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SALT LAKE UT
2014-06-30 385-528-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SALT LAKE UT
2014-06-30 385-528-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SALT LAKE UT
2014-06-27 385-887-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2014-06-24 385-239-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 KAYSVILLE UT
2014-06-24 385-355-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2014-06-24 385-355-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2014-06-23 385-393-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CLEARFIELD UT
2014-06-11 385-626-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2014-06-05 385-236-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
2014-06-05 385-355-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2014-06-05 385-528-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SALT LAKE UT
2014-06-05 385-777-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BOUNTIFUL UT
2014-05-30 385-239-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2014-05-30 385-626-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2014-05-28 385-239-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2014-05-28 385-239-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2014-05-28 385-239-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2014-05-28 385-239-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2014-05-28 385-239-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2014-05-27 385-236-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2014-05-27 385-236-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2014-05-27 385-236-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2014-05-27 385-236-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2014-05-27 385-355-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2014-05-27 385-355-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2014-05-27 385-355-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE 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.