NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

33 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 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
2017-12-21 346-406-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2017-12-21 346-406-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2017-12-18 346-403-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-18 346-403-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-18 346-403-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-18 346-403-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-18 346-403-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-18 346-403-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-18 346-403-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-18 346-403-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-12-13 346-275-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HSTNSUBURB TX
2017-12-11 346-277-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SATSUMA TX
2017-12-11 346-289-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2017-12-11 346-289-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2017-12-08 346-287-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2017-12-08 346-287-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2017-12-08 346-287-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2017-12-08 346-287-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2017-12-08 346-287-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2017-12-08 346-287-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2017-12-08 346-287-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2017-12-07 346-414-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 CLEVELAND TX
2017-12-07 346-414-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 CLEVELAND TX
2017-12-06 346-230-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 APOLLO TX
2017-12-06 346-258-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C SHELDON TX
2017-12-06 346-268-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 SPRING TX
2017-12-04 346-261-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTER TX
2017-12-04 346-261-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTER TX
2017-11-28 346-273-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2017-11-28 346-273-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2017-11-28 346-279-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C SUGAR LAND TX
2017-11-28 346-279-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C SUGAR LAND TX
2017-11-27 346-272-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-11-27 346-272-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2017-11-27 346-762-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F RICHMNRNBG TX
2017-11-22 346-273-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C TOMBALL TX
2017-11-22 346-273-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C TOMBALL TX
2017-11-22 346-285-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAMMEL TX
2017-11-22 346-285-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAMMEL TX
2017-11-21 346-269-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-11-21 346-269-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-11-21 346-269-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-11-21 346-269-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-11-21 346-269-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-11-21 346-561-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-11-21 346-561-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-11-21 346-561-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-11-21 346-561-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-11-21 346-718-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2017-11-21 346-718-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON 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.