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
2022-11-07 945-276-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2022-11-07 945-276-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2022-11-07 945-276-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2022-11-07 945-276-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2022-11-07 945-745-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C ROYSE CITY TX
2022-11-07 945-867-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2022-11-02 945-279-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J DALLAS TX
2022-10-27 945-278-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-278-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2022-10-27 945-322-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C DE SOTO TX
2022-10-27 945-322-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C DE SOTO TX
2022-10-27 945-322-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C DE SOTO TX
2022-10-26 945-262-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F DALLAS TX
2022-10-24 945-278-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FRISCO TX
2022-10-19 945-229-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2022-10-19 945-235-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2022-10-18 945-271-1XXX 1000–1999Assigned COMMIO, LLC 939H WAXAHACHIE TX
2022-10-18 945-946-9XXX 9000–9999Assigned COMMIO, LLC 939H TERRELL TX
2022-10-12 945-275-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-275-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2022-10-12 945-276-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2022-10-12 945-276-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2022-10-11 945-242-8XXX 8000–8999Assigned COMMIO, LLC 939H FORNEY TX
2022-10-10 945-446-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARROLLTON TX
2022-10-10 945-446-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARROLLTON TX
2022-10-10 945-446-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARROLLTON TX
2022-10-06 945-272-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2022-10-06 945-272-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 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.