NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 903
ONVOY, LLC - TX 6
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 3
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
2011-03-18 903-606-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-606-9XXX 9000–9999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-0XXX 0000–0999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-2XXX 2000–2999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 903-607-9XXX 9000–9999Assigned SOUTHWESTERN BELL 9533 TYLER TX
2011-03-16 903-225-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MERIT TX
2011-03-15 903-345-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ROANE TX
2011-03-15 903-354-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F EMHOUSE TX
2011-03-15 903-357-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SHERMAN TX
2011-03-15 903-357-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SHERMAN TX
2011-03-15 903-532-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOWE TX
2011-03-09 903-347-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WINNSBORO TX
2011-03-09 903-402-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GILMER TX
2011-03-09 903-883-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CASH TX
2011-03-01 903-600-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F RICE TX
2011-02-25 903-949-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA TX
2011-02-25 903-949-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA TX
2011-02-23 903-213-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CADDOMILLS TX
2011-02-23 903-224-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CASH TX
2011-02-23 903-484-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BENWHEELER TX
2011-02-23 903-884-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F OMAHA TX
2011-02-22 903-500-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C LONGVIEW TX
2011-02-17 903-347-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WINNSBORO TX
2011-02-17 903-508-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TYLER TX
2011-02-15 903-402-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GILMER TX
2011-01-31 903-272-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PARIS TX
2011-01-28 903-243-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SULPHURSPG TX
2011-01-27 903-458-5XXX 5000–5999Assigned METROPCS, INC. 5562 GREENVILLE TX
2011-01-26 903-218-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C KILGORE TX
2011-01-26 903-804-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ATHENS TX
2011-01-18 903-328-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHERMAN TX
2011-01-14 903-380-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MTPLEASANT TX
2011-01-13 903-497-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MINEOLA TX
2011-01-13 903-644-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 FAIRFIELD TX
2011-01-11 903-361-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DENISON TX
2011-01-04 903-508-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TYLER TX
2010-12-21 903-480-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PALESTINE TX
2010-12-17 903-376-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C MINEOLA TX
2010-12-17 903-401-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PARIS TX
2010-12-17 903-402-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GILMER TX
2010-12-17 903-747-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C TYLER TX
2010-12-17 903-805-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2010-12-17 903-946-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PITTSBURG 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.