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
2013-09-03 281-595-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C ROSHARON TX
2013-09-03 281-915-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C ARCOLA TX
2013-08-19 281-258-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2013-08-15 281-769-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KATY TX
2013-08-01 281-378-8XXX 8000–8999Assigned IP HORIZON LLC 515J TOMBALL TX
2013-07-31 281-396-9XXX 9000–9999Assigned IP HORIZON LLC 515J KATY TX
2013-07-31 281-441-0XXX 0000–0999Assigned IP HORIZON LLC 515J HUMBLE TX
2013-07-31 281-628-8XXX 8000–8999Assigned IP HORIZON LLC 515J BAYTOWN TX
2013-07-31 281-816-1XXX 1000–1999Assigned IP HORIZON LLC 515J FRIENDSWD TX
2013-07-31 281-916-9XXX 9000–9999Assigned IP HORIZON LLC 515J KEMAH TX
2013-07-31 281-984-8XXX 8000–8999Assigned IP HORIZON LLC 515J APOLLO TX
2013-07-25 281-665-4XXX 4000–4999Assigned CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2109 KATY TX
2013-07-23 281-837-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BAYTOWN TX
2013-07-23 281-947-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J FRIENDSWD TX
2013-07-18 281-208-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J STAFFORD TX
2013-07-18 281-532-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J KEMAH TX
2013-07-18 281-965-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C HSTNSUBURB TX
2013-07-09 281-628-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BAYTOWN TX
2013-06-28 281-720-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SATSUMA TX
2013-06-28 281-949-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SATSUMA TX
2013-06-18 281-662-0XXX 0000–0999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-1XXX 1000–1999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-2XXX 2000–2999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-3XXX 3000–3999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-4XXX 4000–4999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-5XXX 5000–5999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-6XXX 6000–6999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-7XXX 7000–7999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-8XXX 8000–8999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-662-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHANNELVW TX
2013-06-18 281-665-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J KATY TX
2013-06-14 281-846-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2013-06-05 281-372-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2013-06-05 281-506-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2013-06-03 281-206-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 BARKER TX
2013-05-23 281-223-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CLEVELAND TX
2013-05-22 281-492-4XXX 4000–4999Assigned METROPCS, INC. 5562 BARKER TX
2013-05-22 281-571-1XXX 1000–1999Assigned METROPCS, INC. 5562 SATSUMA TX
2013-05-22 281-571-5XXX 5000–5999Assigned METROPCS, INC. 5562 SATSUMA TX
2013-05-22 281-571-6XXX 6000–6999Assigned METROPCS, INC. 5562 SATSUMA TX
2013-05-22 281-571-9XXX 9000–9999Assigned METROPCS, INC. 5562 SATSUMA TX
2013-05-22 281-616-1XXX 1000–1999Assigned METROPCS, INC. 5562 BARKER TX
2013-05-22 281-616-2XXX 2000–2999Assigned METROPCS, INC. 5562 BARKER TX
2013-05-22 281-653-4XXX 4000–4999Assigned METROPCS, INC. 5562 SATSUMA TX
2013-05-22 281-676-0XXX 0000–0999Assigned METROPCS, INC. 5562 BARKER TX
2013-05-22 281-676-1XXX 1000–1999Assigned METROPCS, INC. 5562 BARKER TX
2013-05-22 281-676-9XXX 9000–9999Assigned METROPCS, INC. 5562 BARKER TX
2013-05-22 281-738-0XXX 0000–0999Assigned METROPCS, INC. 5562 BEACH CITY TX
2013-05-15 281-432-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CLEVELAND TX
2013-04-30 281-903-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C SUGAR LAND 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.