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
2012-05-23 210-517-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-05-23 210-517-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-05-23 210-517-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-05-23 210-517-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-05-16 210-510-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-05-16 210-510-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-05-16 210-517-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-04-20 210-510-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 8434 SANANTONIO TX
2012-04-20 210-510-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 8434 SANANTONIO TX
2012-04-04 210-517-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-04-02 210-245-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-04-02 210-245-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-03-26 210-245-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-03-26 210-245-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-03-26 210-245-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2012-03-26 210-245-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2012-03-26 210-245-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2012-03-26 210-245-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2012-03-19 210-202-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANANTONIO TX
2012-03-19 210-202-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANANTONIO TX
2012-03-19 210-202-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANANTONIO TX
2012-03-19 210-202-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANANTONIO TX
2012-03-19 210-510-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SANANTONIO TX
2012-03-19 210-510-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SANANTONIO TX
2012-03-19 210-510-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J SANANTONIO TX
2012-03-19 210-510-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SANANTONIO TX
2012-02-28 210-202-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANANTONIO TX
2012-02-14 210-510-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-02-14 210-510-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-02-09 210-305-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-02-09 210-305-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-02-09 210-417-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-02-09 210-666-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C SANANTONIO TX
2012-02-08 210-305-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-02-08 210-307-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-02-08 210-592-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-02-08 210-617-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-01-19 210-202-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-01-19 210-202-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-01-19 210-202-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-01-19 210-202-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-01-13 210-236-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-730-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-730-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-730-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-730-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-730-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-730-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-730-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-01-13 210-776-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C 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.