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
2006-06-27 512-828-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-27 512-828-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-27 512-851-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-27 512-851-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-27 512-851-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-27 512-895-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2006-06-27 512-895-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2006-06-26 512-716-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-20 512-509-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-509-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 GEORGETOWN TX
2006-06-20 512-709-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-20 512-709-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-20 512-767-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-20 512-852-0XXX 0000–0999Assigned WESTEL, INC. - TX 7399 AUSTIN TX
2006-06-20 512-919-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-20 512-919-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-20 512-961-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-20 512-961-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-06-13 512-590-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2006-06-12 512-229-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELGIN TX
2006-06-12 512-308-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BASTROP TX
2006-06-12 512-721-6XXX 6000–6999Assigned METROPCS, INC. 5562 AUSTIN TX
2006-06-06 512-269-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TAYLOR TX
2006-06-01 512-590-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2006-06-01 512-682-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2006-06-01 512-716-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2006-05-31 512-240-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GEORGETOWN TX
2006-05-31 512-919-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-05-31 512-919-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2006-05-25 512-527-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-535-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-623-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-623-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-670-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-671-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-672-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-674-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-983-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-983-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-983-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-25 512-983-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2006-05-19 512-379-0XXX 0000–0999Assigned GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 LEANDER 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.