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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2018-01-29 346-291-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2018-01-29 346-291-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2018-01-17 346-294-0XXX 0000–0999Assigned IP GLOBAL NETWORKS - TX 763H HOUSTON TX
2018-01-17 346-294-1XXX 1000–1999Assigned IP GLOBAL NETWORKS - TX 763H HOUSTON TX
2018-01-16 346-271-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C FRIENDSWD TX
2018-01-16 346-271-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C FRIENDSWD TX
2018-01-16 346-271-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C FRIENDSWD TX
2018-01-16 346-293-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-16 346-293-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-16 346-293-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-16 346-293-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-16 346-293-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-16 346-293-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-16 346-293-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-11 346-279-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SUGAR LAND TX
2018-01-05 346-280-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2018-01-05 346-280-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2018-01-03 346-289-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2018-01-03 346-290-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-01-03 346-290-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-01-03 346-403-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-03 346-406-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-03 346-406-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-03 346-406-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-03 346-406-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-12-27 346-291-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-12-27 346-292-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BAYTOWN TX
2017-12-27 346-292-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BAYTOWN TX
2017-12-27 346-292-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BAYTOWN TX
2017-12-27 346-292-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BAYTOWN TX
2017-12-27 346-292-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BAYTOWN TX
2017-12-22 346-257-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2017-12-22 346-257-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2017-12-22 346-269-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-12-22 346-271-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C FRIENDSWD TX
2017-12-22 346-271-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C FRIENDSWD TX
2017-12-22 346-275-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-12-22 346-275-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-12-22 346-275-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-12-21 346-272-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-12-21 346-290-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-12-21 346-290-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-12-21 346-290-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-12-21 346-290-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-12-21 346-290-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-12-21 346-290-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-12-21 346-322-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C BARKER TX
2017-12-21 346-322-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C BARKER TX
2017-12-21 346-406-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2017-12-21 346-406-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J 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.