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
2011-05-17 385-202-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2011-05-17 385-202-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2011-05-17 385-202-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2011-05-17 385-202-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2011-05-17 385-226-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2011-05-11 385-202-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2011-05-05 385-226-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-05-05 385-226-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-05-05 385-226-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-05-03 385-218-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2011-05-03 385-218-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2011-04-29 385-743-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MURRAY UT
2011-04-19 385-218-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-04-19 385-218-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-04-19 385-218-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-04-08 385-226-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-04-06 385-208-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-03-10 385-226-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-03-10 385-226-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-03-10 385-226-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-03-10 385-226-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-03-10 385-226-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2011-03-07 385-218-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2011-01-25 385-212-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2011-01-25 385-212-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2011-01-25 385-212-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2011-01-21 385-212-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2011-01-21 385-743-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F MURRAY UT
2011-01-19 385-218-2XXX 2000–2999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2011-01-14 385-208-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
2011-01-14 385-212-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-01-14 385-212-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-01-14 385-212-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-01-14 385-212-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-01-14 385-218-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2011-01-10 385-208-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E PROVO UT
2011-01-10 385-218-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2011-01-07 385-208-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2011-01-07 385-208-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2010-12-20 385-212-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2010-12-20 385-212-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2010-12-14 385-218-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2010-12-03 385-232-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2010-12-03 385-232-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2010-12-03 385-232-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2010-12-03 385-232-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALT LAKE UT
2010-12-03 385-232-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALT LAKE UT
2010-12-03 385-628-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALT LAKE UT
2010-12-03 385-628-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALT LAKE UT
2010-12-03 385-628-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 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.