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
2013-05-29 385-265-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F AMERCNFORK UT
2013-05-29 385-265-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F AMERCNFORK UT
2013-05-29 385-290-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2013-05-29 385-290-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2013-05-20 385-220-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2013-05-20 385-220-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E FARMINGTON UT
2013-05-15 385-888-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2013-05-09 385-210-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SALT LAKE UT
2013-05-09 385-210-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SALT LAKE UT
2013-05-03 385-207-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2013-04-25 385-333-0XXX 0000–0999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D OGDEN UT
2013-04-25 385-393-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CLEARFIELD UT
2013-04-25 385-722-9XXX 9000–9999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D SALT LAKE UT
2013-04-17 385-474-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MURRAY UT
2013-04-11 385-333-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2013-04-02 385-209-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2013-04-02 385-209-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2013-03-20 385-474-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MURRAY UT
2013-03-20 385-722-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2013-03-19 385-374-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 LEHI UT
2013-03-01 385-265-4XXX 4000–4999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D AMERCNFORK UT
2013-02-22 385-393-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CLEARFIELD UT
2013-02-21 385-207-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PROVO UT
2013-02-21 385-233-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PLEASATGRV UT
2013-02-21 385-474-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D MURRAY UT
2013-02-21 385-722-8XXX 8000–8999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2013-02-13 385-214-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-214-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-224-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-224-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2013-02-13 385-228-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-228-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-228-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2013-02-13 385-228-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 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.