NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 210
NEW CINGULAR WIRELESS PCS, LLC - IL 1054
T-MOBILE USA, INC. 668
ONVOY, LLC - TX 395
BANDWIDTH.COM CLEC, LLC - TX 371
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 314
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
2013-03-22 210-585-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2013-03-22 210-585-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2013-03-20 210-740-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-03-20 210-740-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-03-20 210-740-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-03-11 210-585-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 SANANTONIO TX
2013-03-07 210-801-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-03-07 210-801-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-03-07 210-801-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-03-07 210-801-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-03-07 210-801-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-03-04 210-801-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANANTONIO TX
2013-02-28 210-901-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SANANTONIO TX
2013-02-22 210-718-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2013-02-22 210-763-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-763-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-22 210-803-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-02-13 210-718-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-13 210-718-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-02-08 210-802-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2013-02-08 210-802-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2013-02-08 210-802-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2013-02-08 210-802-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2013-02-08 210-802-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2013-02-08 210-802-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2013-02-08 210-802-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO 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.