NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

11 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 281
ONVOY, LLC - TX 10
EXIANT COMMUNICATIONS 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
2005-09-07 281-226-2XXX 2000–2999Assigned METROPCS, INC. 5562 APOLLO TX
2005-09-07 281-669-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2005-09-07 281-669-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2005-08-31 281-761-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND TX
2005-08-31 281-761-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND TX
2005-08-30 281-651-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPRING TX
2005-08-30 281-719-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SPRING TX
2005-08-24 281-962-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SHELDON TX
2005-08-23 281-301-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BAMMEL TX
2005-08-22 281-374-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TOMBALL TX
2005-08-22 281-374-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TOMBALL TX
2005-08-17 281-383-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEACH CITY TX
2005-08-16 281-864-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHANNELVW TX
2005-08-16 281-883-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HUMBLE TX
2005-08-16 281-941-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LA PORTE TX
2005-08-15 281-241-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DEER PARK TX
2005-08-15 281-824-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ALVIN TX
2005-08-10 281-204-5XXX 5000–5999Assigned METROPCS, INC. 5562 APOLLO TX
2005-08-10 281-309-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2005-08-10 281-757-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2005-08-10 281-757-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2005-08-10 281-757-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2005-08-05 281-201-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SUGAR LAND TX
2005-07-28 281-272-3XXX 3000–3999Assigned METROPCS, INC. 5562 HSTNSUBURB TX
2005-07-28 281-691-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2005-07-19 281-408-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BAMMEL TX
2005-07-19 281-408-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BAMMEL TX
2005-07-19 281-816-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRIENDSWD TX
2005-07-19 281-816-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRIENDSWD TX
2005-07-19 281-954-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 APOLLO TX
2005-07-19 281-954-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 APOLLO TX
2005-07-18 281-683-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2005-07-15 281-743-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2005-06-28 281-617-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2005-06-23 281-757-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2005-06-21 281-309-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2005-06-21 281-528-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SPRING TX
2005-06-21 281-825-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SPRING TX
2005-06-21 281-825-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SPRING TX
2005-06-02 281-383-8XXX 8000–8999Assigned METROPCS, INC. 5562 BEACH CITY TX
2005-05-26 281-249-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 HSTNSUBURB TX
2005-05-26 281-943-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BAMMEL TX
2005-05-26 281-944-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BARKER TX
2005-05-24 281-204-3XXX 3000–3999Assigned METROPCS, INC. 5562 APOLLO TX
2005-05-20 281-727-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2005-05-20 281-727-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2005-05-20 281-727-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2005-05-20 281-755-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2005-05-19 281-309-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2005-05-19 281-309-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON 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.