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
2015-05-21 385-368-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2015-05-19 385-235-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-519-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLEARFIELD UT
2015-05-19 385-549-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-549-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-549-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-549-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-831-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-831-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-831-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-831-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-19 385-881-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-05-15 385-235-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2015-05-15 385-249-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2015-05-13 385-900-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDVALE UT
2015-05-11 385-239-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2015-05-07 385-238-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2015-05-07 385-238-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2015-04-16 385-352-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2015-04-16 385-352-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2015-04-16 385-352-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2015-04-16 385-404-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2015-04-16 385-404-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2015-04-16 385-404-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2015-04-16 385-498-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F AMERCNFORK UT
2015-04-16 385-498-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F AMERCNFORK UT
2015-04-16 385-498-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F AMERCNFORK UT
2015-04-16 385-519-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2015-04-16 385-519-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2015-04-16 385-519-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2015-04-14 385-246-9XXX 9000–9999Assigned METROPCS, INC. 5562 MIDVALE UT
2015-04-14 385-685-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SPRINGVL UT
2015-04-14 385-900-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2015-04-14 385-900-6XXX 6000–6999Assigned METROPCS, INC. 5562 MIDVALE UT
2015-04-13 385-347-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F MURRAY UT
2015-04-13 385-715-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2015-04-09 385-404-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PAYSON UT
2015-04-07 385-239-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2015-04-07 385-405-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2015-04-07 385-424-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2015-04-07 385-424-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2015-04-07 385-424-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2015-04-07 385-445-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2015-04-01 385-248-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J PROVO UT
2015-03-20 385-900-0XXX 0000–0999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-03-20 385-900-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-03-20 385-900-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-03-17 385-715-8XXX 8000–8999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2015-03-13 385-246-8XXX 8000–8999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D MIDVALE UT
2015-03-13 385-248-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PROVO 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.