NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

36 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 346
ONVOY, LLC - TX 21
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
2023-12-11 346-733-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANGHAMCRK TX
2023-12-11 346-745-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2023-12-11 346-745-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2023-12-11 346-745-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2023-12-11 346-747-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-12-11 346-747-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-12-11 346-747-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-12-10 346-705-0XXX 0000–0999Assigned IP HORIZON LLC 515J CHANNELVW TX
2023-12-10 346-713-8XXX 8000–8999Assigned IP HORIZON LLC 515J SMITHERSLK TX
2023-12-10 346-713-9XXX 9000–9999Assigned IP HORIZON LLC 515J SMITHERSLK TX
2023-12-01 346-636-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2023-11-27 346-741-1XXX 1000–1999Assigned EON TELECOM, INC. 839J HOUSTON TX
2023-11-17 346-557-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-605-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-605-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-605-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-605-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-693-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-693-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-693-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-17 346-693-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2023-11-15 346-740-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2023-11-15 346-740-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2023-11-15 346-740-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2023-11-15 346-740-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2023-11-14 346-739-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2023-11-08 346-696-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-11-08 346-696-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-11-08 346-696-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-11-08 346-696-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-11-08 346-696-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-11-08 346-696-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2023-11-06 346-739-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2023-11-06 346-739-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2023-11-06 346-739-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2023-11-06 346-739-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2023-11-06 346-739-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2023-11-06 346-739-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2023-11-06 346-739-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2023-11-02 346-683-5XXX 5000–5999Assigned NUSO, LLC 478J WESTFIELD TX
2023-11-02 346-683-6XXX 6000–6999Assigned NUSO, LLC 478J WESTFIELD TX
2023-10-31 346-737-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2023-10-30 346-557-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2023-10-30 346-557-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2023-10-30 346-557-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2023-10-30 346-557-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2023-10-30 346-557-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2023-10-30 346-557-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2023-10-30 346-602-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2023-10-30 346-602-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX

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.