NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

51 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 945
ONVOY, LLC - TX 13
NEW CINGULAR WIRELESS PCS, LLC - IL 12
TELEPORT COMMUNICATIONS AMERICA, LLC - TX 10
BANDWIDTH.COM CLEC, LLC - TX 8
E. RITTER COMMUNICATIONS, LLC 4
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
2021-11-02 945-230-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-01 945-229-1XXX 1000–1999Assigned CALLWORKS CORPORATION 475J DALLAS TX
2021-10-28 945-228-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CEDAR HILL TX
2021-10-27 945-212-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CEDAR HILL TX
2021-10-26 945-200-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C ENNIS TX
2021-10-26 945-200-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C ENNIS TX
2021-10-26 945-227-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-26 945-227-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2021-10-25 945-224-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MCKINNEY TX
2021-10-25 945-224-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MCKINNEY TX
2021-10-25 945-224-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MCKINNEY TX
2021-10-25 945-224-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MCKINNEY TX
2021-10-25 945-224-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MCKINNEY TX
2021-10-22 945-215-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H ALLEN TX
2021-10-22 945-215-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H ALLEN TX
2021-10-22 945-386-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C FORNEY TX
2021-10-22 945-386-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C FORNEY TX
2021-10-22 945-386-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C FORNEY TX
2021-10-21 945-218-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C DALLAS TX
2021-10-21 945-218-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C DALLAS TX
2021-10-21 945-218-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C DALLAS TX
2021-10-21 945-218-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C DALLAS TX
2021-10-21 945-218-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C DALLAS TX
2021-10-20 945-529-0XXX 0000–0999Assigned COMMIO, LLC 939H VENUS TX
2021-10-20 945-529-1XXX 1000–1999Assigned COMMIO, LLC 939H VENUS TX
2021-10-19 945-226-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RED OAK TX
2021-10-19 945-226-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RED OAK TX
2021-10-08 945-200-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ENNIS TX
2021-10-08 945-200-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ENNIS TX
2021-10-07 945-468-2XXX 2000–2999Assigned VONAGE AMERICA LLC 197D DALLAS TX
2021-10-04 945-542-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAXAHACHIE TX
2021-09-30 945-225-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2021-09-30 945-225-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2021-09-30 945-225-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2021-09-30 945-225-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2021-09-30 945-225-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI 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.