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
2018-04-18 346-334-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2018-04-18 346-335-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2018-04-18 346-335-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2018-04-18 346-335-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2018-04-17 346-273-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2018-04-04 346-332-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2018-04-04 346-332-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2018-04-04 346-332-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2018-04-04 346-332-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2018-03-28 346-273-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C TOMBALL TX
2018-03-27 346-230-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C APOLLO TX
2018-03-27 346-248-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C PINEHURST TX
2018-03-27 346-289-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C DICKINSON TX
2018-03-27 346-292-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C BAYTOWN TX
2018-03-27 346-329-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-03-27 346-329-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-03-27 346-843-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C RICHMNRNBG TX
2018-03-23 346-328-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 SPRING TX
2018-03-22 346-216-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAYTOWN TX
2018-03-22 346-263-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAYTOWN TX
2018-03-22 346-290-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-03-22 346-327-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-22 346-327-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2018-03-21 346-282-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 CHANNELVW TX
2018-03-21 346-282-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 CHANNELVW TX
2018-03-21 346-322-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 BARKER TX
2018-03-21 346-322-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BARKER TX
2018-03-21 346-325-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SATSUMA TX
2018-03-19 346-273-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2018-03-19 346-290-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C BAMMEL TX
2018-03-19 346-297-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2018-03-19 346-297-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2018-03-19 346-297-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2018-03-16 346-278-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C MANVEL TX
2018-03-14 346-703-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2018-03-13 346-324-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-03-13 346-324-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-03-12 346-298-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRING TX
2018-03-12 346-298-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRING TX
2018-03-12 346-306-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2018-03-12 346-306-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2018-03-12 346-306-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK 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.