NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 5
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
2014-02-21 956-442-4XXX 4000–4999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-02-21 956-442-9XXX 9000–9999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-02-17 956-258-3XXX 3000–3999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-258-4XXX 4000–4999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-280-7XXX 7000–7999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-02-17 956-438-0XXX 0000–0999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-438-1XXX 1000–1999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-438-3XXX 3000–3999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-438-4XXX 4000–4999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-438-5XXX 5000–5999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-438-6XXX 6000–6999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-17 956-509-8XXX 8000–8999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-02-12 956-258-0XXX 0000–0999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-12 956-258-1XXX 1000–1999Assigned METROPCS, INC. 5562 PHARR TX
2014-02-12 956-280-8XXX 8000–8999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-02-12 956-322-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCALLEN TX
2014-02-12 956-379-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MISSION TX
2014-02-12 956-518-3XXX 3000–3999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-02-12 956-730-0XXX 0000–0999Assigned METROPCS, INC. 5562 HARLINGEN TX
2014-02-12 956-730-3XXX 3000–3999Assigned METROPCS, INC. 5562 HARLINGEN TX
2014-02-11 956-225-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MCALLEN TX
2014-02-06 956-280-9XXX 9000–9999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-06 956-293-2XXX 2000–2999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-06 956-293-3XXX 3000–3999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-06 956-293-4XXX 4000–4999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-06 956-293-5XXX 5000–5999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-06 956-293-7XXX 7000–7999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-06 956-293-8XXX 8000–8999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-06 956-293-9XXX 9000–9999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2014-02-04 956-274-8XXX 8000–8999Assigned METROPCS, INC. 5562 DONNA TX
2014-02-04 956-274-9XXX 9000–9999Assigned METROPCS, INC. 5562 DONNA TX
2014-02-04 956-277-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LA FERIA TX
2014-01-28 956-518-2XXX 2000–2999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-01-28 956-518-4XXX 4000–4999Assigned METROPCS, INC. 5562 BROWNSVL TX
2014-01-21 956-347-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LYFORD TX
2014-01-16 956-277-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LA FERIA TX
2014-01-10 956-258-2XXX 2000–2999Assigned METROPCS, INC. 5562 PHARR TX
2014-01-10 956-438-2XXX 2000–2999Assigned METROPCS, INC. 5562 PHARR TX
2013-12-31 956-730-7XXX 7000–7999Assigned METROPCS, INC. 5562 HARLINGEN TX
2013-12-19 956-598-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K MISSION TX
2013-12-17 956-258-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K PHARR TX
2013-12-17 956-518-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K BROWNSVL TX
2013-12-16 956-274-5XXX 5000–5999Assigned METROPCS, INC. 5562 DONNA TX
2013-12-12 956-518-6XXX 6000–6999Assigned METROPCS, INC. 5562 BROWNSVL TX
2013-12-12 956-518-8XXX 8000–8999Assigned METROPCS, INC. 5562 BROWNSVL TX
2013-11-13 956-518-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROWNSVL TX
2013-11-13 956-701-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2013-11-11 956-352-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RIGRANDECY TX
2013-11-11 956-375-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESLACO TX
2013-11-08 956-518-5XXX 5000–5999Assigned METROPCS, INC. 5562 BROWNSVL 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.