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
2015-11-20 385-247-1XXX 1000–1999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-6XXX 6000–6999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-20 385-247-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E MIDVALE UT
2015-11-19 385-477-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2015-11-19 385-477-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2015-11-19 385-477-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2015-11-17 385-770-1XXX 1000–1999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2015-11-17 385-770-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2015-11-17 385-770-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2015-11-17 385-770-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2015-11-17 385-770-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2015-11-13 385-477-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2015-11-12 385-243-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 BOUNTIFUL UT
2015-11-06 385-230-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2015-11-04 385-557-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2015-11-02 385-309-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PROVO UT
2015-10-28 385-383-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CLEARFIELD UT
2015-10-23 385-241-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-10-23 385-241-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-10-23 385-309-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-10-23 385-535-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-10-23 385-535-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-10-23 385-535-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-10-23 385-539-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-10-21 385-262-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F KAYSVILLE UT
2015-10-21 385-262-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F KAYSVILLE UT
2015-10-16 385-323-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PLEASATGRV UT
2015-10-07 385-257-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D MURRAY UT
2015-09-28 385-272-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-28 385-272-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-24 385-352-8XXX 8000–8999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LEHI UT
2015-09-22 385-248-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-09-22 385-248-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-09-22 385-262-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2015-09-22 385-535-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-09-22 385-535-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 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.