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
2014-02-17 281-906-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2014-02-17 281-906-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2014-02-06 281-223-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 CLEVELAND TX
2014-02-06 281-223-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 CLEVELAND TX
2014-02-04 281-707-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 BAYTOWN TX
2014-01-30 281-503-2XXX 2000–2999Assigned CSC VOICE, LLC 612K PORTER HTS TX
2014-01-30 281-577-3XXX 3000–3999Assigned CSC VOICE, LLC 612K PORTER TX
2014-01-30 281-577-4XXX 4000–4999Assigned CSC VOICE, LLC 612K PORTER TX
2014-01-23 281-223-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CLEVELAND TX
2014-01-14 281-678-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2014-01-14 281-907-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPRING TX
2013-12-17 281-769-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KATY TX
2013-12-13 281-206-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 BARKER TX
2013-12-13 281-760-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2013-12-12 281-717-0XXX 0000–0999Assigned METROPCS, INC. 5562 BARKER TX
2013-12-12 281-717-3XXX 3000–3999Assigned METROPCS, INC. 5562 BARKER TX
2013-12-12 281-738-6XXX 6000–6999Assigned METROPCS, INC. 5562 BEACH CITY TX
2013-12-12 281-738-8XXX 8000–8999Assigned METROPCS, INC. 5562 BEACH CITY TX
2013-12-12 281-864-8XXX 8000–8999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-12-12 281-918-6XXX 6000–6999Assigned METROPCS, INC. 5562 BEACH CITY TX
2013-11-25 281-929-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J HSTNSUBURB TX
2013-11-11 281-206-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 BARKER TX
2013-11-08 281-707-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BAYTOWN TX
2013-11-08 281-915-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARCOLA TX
2013-11-06 281-258-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2013-11-06 281-929-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2013-11-05 281-665-6XXX 6000–6999Assigned CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2109 KATY TX
2013-10-21 281-206-3XXX 3000–3999Assigned METROPCS, INC. 5562 BARKER TX
2013-10-21 281-410-4XXX 4000–4999Assigned METROPCS, INC. 5562 STAFFORD TX
2013-10-21 281-410-9XXX 9000–9999Assigned METROPCS, INC. 5562 STAFFORD TX
2013-10-21 281-918-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEACH CITY TX
2013-10-18 281-665-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J KATY TX
2013-10-17 281-223-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CLEVELAND TX
2013-10-08 281-675-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BARKER TX
2013-10-08 281-683-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2013-10-04 281-396-0XXX 0000–0999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 KATY TX
2013-10-03 281-665-5XXX 5000–5999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 KATY TX
2013-09-26 281-929-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2013-09-26 281-929-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2013-09-24 281-628-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BAYTOWN TX
2013-09-10 281-717-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BARKER TX
2013-09-09 281-965-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2013-09-09 281-965-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB 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.