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
2018-10-04 346-366-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2018-10-04 346-367-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2018-10-02 346-257-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KATY TX
2018-10-02 346-285-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAMMEL TX
2018-10-02 346-332-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2018-10-02 346-345-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMBLE TX
2018-10-02 346-349-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHANNELVW TX
2018-09-28 346-358-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C LEAGUECITY TX
2018-09-28 346-358-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C LEAGUECITY TX
2018-09-26 346-328-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SPRING TX
2018-09-26 346-348-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2018-09-26 346-348-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2018-09-21 346-365-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BARKER TX
2018-09-19 346-293-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2018-09-19 346-335-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2018-09-18 346-358-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F LEAGUECITY TX
2018-09-18 346-361-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F SEABROOK TX
2018-09-18 346-363-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SATSUMA TX
2018-09-14 346-364-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CLEVELAND TX
2018-09-13 346-318-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 ALVIN TX
2018-09-13 346-350-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 SUGAR LAND TX
2018-09-13 346-350-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 SUGAR LAND TX
2018-09-12 346-230-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J APOLLO TX
2018-09-12 346-293-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2018-09-12 346-293-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2018-09-12 346-322-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BARKER TX
2018-09-12 346-341-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J STAFFORD TX
2018-09-12 346-350-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SUGAR LAND TX
2018-09-12 346-357-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2018-09-06 346-363-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SATSUMA TX
2018-08-31 346-358-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C LEAGUECITY TX
2018-08-31 346-358-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C LEAGUECITY TX
2018-08-31 346-359-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C LIVERPOOL TX
2018-08-31 346-361-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C SEABROOK TX
2018-08-31 346-361-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C SEABROOK TX
2018-08-31 346-362-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C SHELDON TX
2018-08-31 346-362-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C SHELDON TX
2018-08-29 346-329-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-08-29 346-329-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-08-29 346-329-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-08-29 346-329-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-08-29 346-329-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-08-29 346-493-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2018-08-28 346-209-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C LIVERPOOL TX
2018-08-28 346-344-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C CROSBY TX
2018-08-28 346-344-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C CROSBY TX
2018-08-23 346-322-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2018-08-22 346-271-6XXX 6000–6999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F FRIENDSWD TX
2018-08-22 346-285-7XXX 7000–7999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BAMMEL TX
2018-08-22 346-287-7XXX 7000–7999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F 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.