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
2013-09-25 210-527-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-09-18 210-727-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-18 210-727-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2013-09-05 210-625-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2013-09-05 210-625-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2013-09-05 210-625-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2013-09-05 210-625-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2013-09-05 210-625-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2013-08-20 210-278-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-388-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-388-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-388-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-388-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-388-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-388-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-388-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-577-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-577-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-577-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-577-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-739-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-812-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-812-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-812-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-812-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-812-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-812-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-910-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-910-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-20 210-910-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-08-14 210-529-3XXX 3000–3999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D SANANTONIO TX
2013-08-14 210-529-9XXX 9000–9999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D SANANTONIO TX
2013-08-01 210-237-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-331-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-331-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-331-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-372-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-372-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-372-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-608-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-739-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-08-01 210-745-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2013-07-25 210-871-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C 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.