NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 512
HD CARRIER LLC 2
INTRADO 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
2014-06-23 512-575-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SMITHVILLE TX
2014-06-19 512-549-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BASTROP TX
2014-06-19 512-620-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LOCKHART TX
2014-06-19 512-688-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GEORGETOWN TX
2014-06-19 512-688-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GEORGETOWN TX
2014-06-18 512-572-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C BERTRAM TX
2014-06-17 512-774-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-17 512-952-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-17 512-960-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-17 512-969-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-17 512-969-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-11 512-969-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2014-06-11 512-969-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2014-06-06 512-399-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 THORNDTHRL TX
2014-06-05 512-521-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 BASTROP TX
2014-06-05 512-969-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 512-969-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 512-969-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-05-27 512-399-5XXX 5000–5999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F THORNDTHRL TX
2014-05-27 512-648-2XXX 2000–2999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F WIMBERLEY TX
2014-05-22 512-957-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F PAIGE TX
2014-05-22 512-960-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AUSTIN TX
2014-05-16 512-993-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2014-05-14 512-952-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-14 512-952-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-14 512-952-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-14 512-952-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-14 512-960-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-14 512-960-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-14 512-960-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-14 512-960-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-05-09 512-269-4XXX 4000–4999Assigned AUSTIN BESTLINE COMPANY 7551 TAYLOR TX
2014-05-09 512-281-8XXX 8000–8999Assigned AUSTIN BESTLINE COMPANY 7551 ELGIN TX
2014-05-09 512-515-2XXX 2000–2999Assigned AUSTIN BESTLINE COMPANY 7551 LIBERTY HL TX
2014-05-09 512-778-3XXX 3000–3999Assigned AUSTIN BESTLINE COMPANY 7551 LIBERTY HL TX
2014-05-09 512-980-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MCDADE TX
2014-05-06 512-227-8XXX 8000–8999Assigned AUSTIN BESTLINE COMPANY 7551 LOCKHART TX
2014-05-06 512-359-1XXX 1000–1999Assigned AUSTIN BESTLINE COMPANY 7551 LOCKHART TX
2014-04-29 512-365-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TAYLOR TX
2014-04-29 512-931-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GEORGETOWN TX
2014-04-28 512-962-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-04-28 512-962-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-04-28 512-962-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-04-28 512-962-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-04-28 512-962-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-04-28 512-993-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-04-21 512-675-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BUCHANNDAM TX
2014-04-21 512-957-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PAIGE TX
2014-04-14 512-256-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F KYLE TX
2014-04-14 512-265-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BURNET 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.