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
2017-09-07 346-268-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2017-09-07 346-268-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2017-09-07 346-268-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2017-09-07 346-268-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2017-09-07 346-269-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-09-07 346-269-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-09-07 346-269-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-09-07 346-269-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-09-07 346-271-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2017-09-06 346-246-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 TOMBALL TX
2017-09-06 346-762-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 RICHMNRNBG TX
2017-09-05 346-301-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPLENDORA TX
2017-09-05 346-754-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-08-31 346-264-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2017-08-31 346-360-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-08-31 346-360-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-08-31 346-908-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SMITHERSLK TX
2017-08-31 346-908-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SMITHERSLK TX
2017-08-29 346-360-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2017-08-29 346-360-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2017-08-29 346-360-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2017-08-29 346-360-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2017-08-29 346-816-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARCOLA TX
2017-08-29 346-816-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARCOLA TX
2017-08-23 346-265-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-08-23 346-265-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-08-23 346-265-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-08-23 346-265-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-08-22 346-254-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2017-08-22 346-254-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2017-08-18 346-257-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2017-08-18 346-257-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2017-08-18 346-570-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2017-08-16 346-299-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-16 346-299-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2017-08-15 346-351-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPRING TX
2017-08-15 346-874-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SUGAR LAND TX
2017-08-08 346-246-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2017-08-08 346-246-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2017-08-08 346-954-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DEER PARK TX
2017-08-08 346-954-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DEER PARK TX
2017-08-07 346-244-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 SATSUMA 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.