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
2017-08-02 385-256-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-266-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-377-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-377-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-377-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-377-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-602-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-602-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-602-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-08-02 385-707-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-07-19 385-264-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2017-07-19 385-264-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2017-07-19 385-264-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2017-07-19 385-264-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2017-07-19 385-264-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2017-07-19 385-421-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 ALTA UT
2017-07-18 385-602-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SALT LAKE UT
2017-07-17 385-422-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2017-07-17 385-422-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F PAYSON UT
2017-07-03 385-271-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D SALT LAKE UT
2017-07-03 385-271-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D SALT LAKE UT
2017-07-03 385-297-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2017-07-03 385-297-8XXX 8000–8999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2017-07-03 385-297-9XXX 9000–9999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2017-07-03 385-484-4XXX 4000–4999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LEHI UT
2017-07-03 385-484-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LEHI UT
2017-07-03 385-484-6XXX 6000–6999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LEHI UT
2017-06-23 385-278-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2017-06-23 385-394-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2017-06-23 385-394-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2017-06-21 385-256-9XXX 9000–9999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H SALT LAKE UT
2017-06-21 385-274-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDVALE UT
2017-06-21 385-489-7XXX 7000–7999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H BOUNTIFUL UT
2017-06-12 385-505-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-12 385-505-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2017-06-06 385-264-1XXX 1000–1999Assigned METROPCS, INC. 5562 OGDEN UT
2017-06-06 385-264-8XXX 8000–8999Assigned METROPCS, INC. 5562 OGDEN UT
2017-06-06 385-285-0XXX 0000–0999Assigned METROPCS, INC. 5562 SALT LAKE UT
2017-06-06 385-285-4XXX 4000–4999Assigned METROPCS, INC. 5562 SALT LAKE UT
2017-06-06 385-285-9XXX 9000–9999Assigned METROPCS, INC. 5562 SALT LAKE UT
2017-05-31 385-449-9XXX 9000–9999Assigned TELNYX LLC 073H ALTA UT
2017-05-31 385-988-9XXX 9000–9999Assigned TELNYX LLC 073H FARMINGTON 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.