NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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 361
ONVOY, LLC - TX 14
TELEPORT COMMUNICATIONS AMERICA, LLC - TX 1
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
2016-04-21 361-646-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 REFUGIO TX
2016-04-21 361-683-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MATHIS TX
2016-04-21 361-747-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRUNI TX
2016-04-21 361-897-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BLOOMINGTN TX
2016-04-21 361-933-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROBSTOWN TX
2016-04-21 361-977-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORTLDGGRY TX
2016-04-21 361-987-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PT COMFORT TX
2016-04-20 361-231-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HEBBRONVL TX
2016-04-20 361-245-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HALLETTSVL TX
2016-04-20 361-284-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VANDERBILT TX
2016-04-20 361-286-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TIVOLI TX
2016-04-20 361-287-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SKIDMORE TX
2016-04-20 361-330-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODSBORO TX
2016-04-20 361-333-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VICTORIA TX
2016-04-20 361-405-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GOLIAD TX
2016-04-20 361-420-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLARKWOOD TX
2016-04-20 361-463-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKPORT TX
2016-04-20 361-492-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GEORGEWEST TX
2016-04-20 361-523-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J INGLESIDE TX
2016-04-20 361-636-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FREER TX
2016-04-20 361-667-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FALFURRIAS TX
2016-04-20 361-675-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KINGSVILLE TX
2016-04-20 361-786-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J THREERIVRS TX
2016-04-20 361-998-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AGUA DULCE TX
2016-04-19 361-228-7XXX 7000–7999Assigned STPCS JOINT VENTURE, LLC 4290 KINGSVILLE TX
2016-04-13 361-978-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ENCINO TX
2016-04-07 361-352-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MIRANDO CY TX
2016-04-04 361-424-7XXX 7000–7999Assigned METROPCS, INC. 5562 SINTON TX
2016-04-04 361-424-8XXX 8000–8999Assigned METROPCS, INC. 5562 SINTON TX
2016-04-04 361-846-1XXX 1000–1999Assigned METROPCS, INC. 5562 FALFURRIAS TX
2016-04-04 361-846-2XXX 2000–2999Assigned METROPCS, INC. 5562 FALFURRIAS TX
2016-04-04 361-999-0XXX 0000–0999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-04-04 361-999-1XXX 1000–1999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-04-04 361-999-2XXX 2000–2999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-04-04 361-999-3XXX 3000–3999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-04-04 361-999-5XXX 5000–5999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-04-04 361-999-6XXX 6000–6999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-04-04 361-999-7XXX 7000–7999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-04-04 361-999-8XXX 8000–8999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-03-30 361-999-4XXX 4000–4999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-03-30 361-999-9XXX 9000–9999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D C CHRISTI TX
2016-03-23 361-330-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODSBORO TX
2016-03-16 361-256-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C BENAVIDES TX
2016-03-16 361-256-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C BENAVIDES TX
2016-03-16 361-287-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C SKIDMORE TX
2016-03-16 361-287-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C SKIDMORE TX
2016-03-16 361-454-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C BAYSIDE TX
2016-03-16 361-454-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C BAYSIDE TX
2016-03-16 361-543-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C WOODSBORO TX
2016-03-16 361-667-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FALFURRIAS 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.