NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 801
HD CARRIER LLC 3
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
2005-04-21 801-438-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2005-04-21 801-438-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2005-04-21 801-438-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2005-04-21 801-438-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2005-04-18 801-703-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2005-04-18 801-703-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2005-04-15 801-682-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2005-04-15 801-866-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2005-04-15 801-866-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2005-04-13 801-762-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2005-04-04 801-758-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDVALE UT
2005-04-04 801-758-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDVALE UT
2005-04-04 801-769-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PLEASATGRV UT
2005-04-04 801-769-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PLEASATGRV UT
2005-04-04 801-769-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PLEASATGRV UT
2005-04-01 801-783-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2005-04-01 801-783-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2005-04-01 801-783-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2005-04-01 801-938-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2005-04-01 801-938-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2005-04-01 801-938-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2005-03-24 801-660-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KAYSVILLE UT
2005-03-24 801-660-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KAYSVILLE UT
2005-03-24 801-660-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KAYSVILLE UT
2005-03-23 801-663-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2005-03-22 801-797-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F BOUNTIFUL UT
2005-03-22 801-797-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F BOUNTIFUL UT
2005-03-22 801-797-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2005-03-21 801-436-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2005-03-21 801-528-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2005-03-21 801-528-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2005-03-21 801-528-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2005-03-21 801-528-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2005-03-14 801-717-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2005-03-03 801-683-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 BOUNTIFUL UT
2005-03-03 801-683-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 BOUNTIFUL UT
2005-03-02 801-682-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2005-03-01 801-618-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2005-03-01 801-618-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2005-03-01 801-618-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2005-03-01 801-618-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2005-03-01 801-618-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2005-02-28 801-858-1XXX 1000–1999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 MIDVALE UT
2005-02-25 801-653-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEHI UT
2005-02-25 801-653-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEHI UT
2005-02-25 801-653-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEHI UT
2005-02-25 801-653-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEHI UT
2005-02-25 801-653-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEHI UT
2005-02-18 801-682-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2005-02-17 801-784-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 CLEARFIELD 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.