NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 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 956
ONVOY, LLC - TX 8
AHOI LLC 1
8X8, INC. 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
2011-05-23 956-336-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROWNSVL TX
2011-05-23 956-363-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WESLACO TX
2011-05-18 956-280-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROWNSVL TX
2011-05-13 956-267-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LAREDO TX
2011-05-12 956-329-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EDINBURG TX
2011-04-25 956-998-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESLACO TX
2011-04-20 956-261-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESLACO TX
2011-04-18 956-254-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LOSFRESNOS TX
2011-04-13 956-270-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K EDINBURG TX
2011-04-05 956-270-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2011-04-05 956-270-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2011-03-30 956-545-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K BROWNSVL TX
2011-03-30 956-800-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K MCALLEN TX
2011-03-26 956-600-9XXX 9000–9999Assigned STPCS JOINT VENTURE, LLC 4290 MISSION TX
2011-03-25 956-340-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-25 956-616-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-22 956-278-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-22 956-322-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-22 956-322-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-22 956-322-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-22 956-365-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HARLINGEN TX
2011-03-22 956-429-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-22 956-429-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-22 956-429-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALLEN TX
2011-03-14 956-529-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION TX
2011-03-11 956-353-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROMA TX
2011-03-09 956-524-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PORTISABEL TX
2011-03-09 956-599-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION TX
2011-03-09 956-599-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION TX
2011-03-09 956-599-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION TX
2011-03-09 956-599-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION TX
2011-03-09 956-599-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION TX
2011-03-09 956-685-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PHARR TX
2011-03-02 956-270-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2011-03-02 956-270-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2011-03-02 956-402-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PHARR TX
2011-03-02 956-402-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PHARR TX
2011-03-02 956-502-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PHARR TX
2011-03-02 956-502-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PHARR TX
2011-02-23 956-238-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LOSFRESNOS TX
2011-02-23 956-267-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2011-02-23 956-336-5XXX 5000–5999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2011-02-23 956-336-6XXX 6000–6999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2011-02-23 956-336-7XXX 7000–7999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2011-02-23 956-364-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HARLINGEN TX
2011-02-23 956-524-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PORTISABEL TX
2011-02-23 956-887-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LA FERIA TX
2011-02-22 956-261-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESLACO TX
2011-02-22 956-261-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESLACO TX
2011-02-22 956-261-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESLACO 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.