NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

33 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 346
ONVOY, LLC - TX 18
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 9
PAETEC ITEL, LLC 2
BANDWIDTH.COM CLEC, LLC - TX 2
TELNYX LLC 1
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
2021-04-18 346-451-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-04-18 346-451-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-04-18 346-451-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-04-18 346-477-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMBLE TX
2021-04-18 346-477-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMBLE TX
2021-04-16 346-333-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J LANGHAMCRK TX
2021-04-16 346-643-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPLENDORA TX
2021-04-16 346-643-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPLENDORA TX
2021-04-15 346-799-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CLEVELAND TX
2021-04-15 346-799-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CLEVELAND TX
2021-04-15 346-810-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2021-04-14 346-633-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DEER PARK TX
2021-04-14 346-633-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DEER PARK TX
2021-04-14 346-789-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CHANNELVW TX
2021-04-12 346-459-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2021-04-12 346-459-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2021-04-08 346-576-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2021-04-08 346-576-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2021-04-08 346-576-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2021-04-08 346-576-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2021-04-07 346-645-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2021-04-07 346-645-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2021-04-07 346-645-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2021-04-07 346-645-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2021-04-06 346-481-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-04-06 346-481-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX
2021-03-31 346-296-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2021-03-29 346-452-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2021-03-29 346-452-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2021-03-29 346-452-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2021-03-29 346-452-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2021-03-29 346-452-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2021-03-29 346-452-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2021-03-29 346-452-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2021-03-29 346-455-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-455-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-455-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-455-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-455-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-455-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-646-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-646-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2021-03-29 346-646-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.