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
2013-07-18 956-352-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RIGRANDECY TX
2013-07-17 956-509-0XXX 0000–0999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2013-07-17 956-509-1XXX 1000–1999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2013-07-17 956-509-3XXX 3000–3999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2013-07-17 956-509-4XXX 4000–4999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2013-07-17 956-509-5XXX 5000–5999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2013-07-17 956-509-6XXX 6000–6999Assigned STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2013-07-03 956-378-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EDINBURG TX
2013-06-28 956-422-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROMA TX
2013-06-28 956-509-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 BROWNSVL TX
2013-06-28 956-999-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2013-06-28 956-999-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2013-06-27 956-340-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MCALLEN TX
2013-06-17 956-352-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RIGRANDECY TX
2013-06-17 956-509-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROWNSVL TX
2013-06-12 956-378-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2013-06-12 956-378-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2013-06-12 956-378-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2013-06-11 956-999-0XXX 0000–0999Assigned METROPCS, INC. 5562 LAREDO TX
2013-06-11 956-999-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAREDO TX
2013-06-11 956-999-2XXX 2000–2999Assigned METROPCS, INC. 5562 LAREDO TX
2013-06-11 956-999-3XXX 3000–3999Assigned METROPCS, INC. 5562 LAREDO TX
2013-06-11 956-999-4XXX 4000–4999Assigned METROPCS, INC. 5562 LAREDO TX
2013-06-11 956-999-7XXX 7000–7999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D LAREDO TX
2013-06-11 956-999-9XXX 9000–9999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D LAREDO TX
2013-06-04 956-340-6XXX 6000–6999Assigned STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2013-06-04 956-340-7XXX 7000–7999Assigned STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2013-06-04 956-340-8XXX 8000–8999Assigned STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2013-06-04 956-340-9XXX 9000–9999Assigned STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2013-06-04 956-616-6XXX 6000–6999Assigned STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2013-06-03 956-375-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K WESLACO TX
2013-05-29 956-413-0XXX 0000–0999Assigned METROPCS, INC. 5562 LAREDO TX
2013-05-29 956-413-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAREDO TX
2013-05-29 956-413-2XXX 2000–2999Assigned METROPCS, INC. 5562 LAREDO TX
2013-05-29 956-413-3XXX 3000–3999Assigned METROPCS, INC. 5562 LAREDO TX
2013-05-29 956-413-4XXX 4000–4999Assigned METROPCS, INC. 5562 LAREDO TX
2013-05-29 956-413-9XXX 9000–9999Assigned METROPCS, INC. 5562 LAREDO TX
2013-05-28 956-258-6XXX 6000–6999Assigned METROPCS, INC. 5562 PHARR TX
2013-05-28 956-258-7XXX 7000–7999Assigned METROPCS, INC. 5562 PHARR TX
2013-05-28 956-258-8XXX 8000–8999Assigned METROPCS, INC. 5562 PHARR TX
2013-05-28 956-263-3XXX 3000–3999Assigned METROPCS, INC. 5562 RIGRANDECY TX
2013-05-28 956-317-9XXX 9000–9999Assigned METROPCS, INC. 5562 RIGRANDECY TX
2013-05-28 956-378-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K EDINBURG TX
2013-05-28 956-404-2XXX 2000–2999Assigned METROPCS, INC. 5562 BROWNSVL TX
2013-05-28 956-573-9XXX 9000–9999Assigned METROPCS, INC. 5562 RIGRANDECY TX
2013-05-28 956-621-8XXX 8000–8999Assigned METROPCS, INC. 5562 BROWNSVL TX
2013-05-28 956-621-9XXX 9000–9999Assigned METROPCS, INC. 5562 BROWNSVL TX
2013-05-28 956-685-7XXX 7000–7999Assigned METROPCS, INC. 5562 PHARR TX
2013-05-28 956-685-8XXX 8000–8999Assigned METROPCS, INC. 5562 PHARR TX
2013-05-28 956-685-9XXX 9000–9999Assigned METROPCS, INC. 5562 PHARR 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.