NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2014-10-10 512-710-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2014-10-10 512-710-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2014-10-03 512-645-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-10-03 512-783-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-10-03 512-783-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-10-03 512-783-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-10-03 512-783-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-10-03 512-783-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-10-03 512-988-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BASTROP TX
2014-10-03 512-988-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BASTROP TX
2014-09-23 512-645-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-09-23 512-645-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-09-23 512-645-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-09-22 512-645-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2014-09-18 512-783-0XXX 0000–0999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-18 512-783-1XXX 1000–1999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-18 512-783-2XXX 2000–2999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-18 512-783-3XXX 3000–3999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-18 512-783-9XXX 9000–9999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-17 512-645-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C AUSTIN TX
2014-09-17 512-645-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2014-09-17 512-645-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2014-09-17 512-781-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAN MARCOS TX
2014-09-17 512-792-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C AUSTIN TX
2014-09-16 512-456-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LEANDER TX
2014-09-15 512-790-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BURNET TX
2014-09-15 512-792-0XXX 0000–0999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-15 512-792-1XXX 1000–1999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-15 512-792-6XXX 6000–6999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-15 512-792-7XXX 7000–7999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-15 512-792-8XXX 8000–8999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-09-03 512-792-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J AUSTIN TX
2014-09-03 512-840-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2014-09-03 512-840-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2014-09-03 512-840-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2014-09-03 512-840-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2014-09-03 512-840-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2014-09-02 512-840-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C AUSTIN TX
2014-09-02 512-840-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C AUSTIN TX
2014-08-29 512-781-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAN MARCOS TX
2014-08-29 512-840-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-08-29 512-840-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-08-29 512-956-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-08-29 512-956-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-08-29 512-956-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-08-29 512-956-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-08-25 512-792-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2014-08-25 512-792-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2014-08-25 512-792-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2014-08-22 512-521-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BASTROP TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.