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
2022-01-14 945-536-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2022-01-14 945-536-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2022-01-14 945-536-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2022-01-14 945-536-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2022-01-14 945-536-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2022-01-14 945-536-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2022-01-14 945-536-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2022-01-10 945-426-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J PLANO TX
2022-01-10 945-435-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J ENNIS TX
2022-01-10 945-527-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J MCKINNEY TX
2022-01-10 945-536-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J GRANDPRARI TX
2022-01-10 945-542-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C WAXAHACHIE TX
2022-01-10 945-542-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C WAXAHACHIE TX
2022-01-10 945-546-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J ROCKWALL TX
2022-01-09 945-222-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CRANDALL TX
2022-01-07 945-226-7XXX 7000–7999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F RED OAK TX
2022-01-07 945-231-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F SEAGOVILLE TX
2022-01-07 945-322-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J DE SOTO TX
2022-01-07 945-465-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J COMBINE TX
2022-01-07 945-837-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J DLFTWTARPT TX
2022-01-07 945-910-6XXX 6000–6999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F DALLAS TX
2022-01-06 945-800-5XXX 5000–5999Assigned METROPCS, INC. 5562 PLANO TX
2022-01-05 945-218-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2022-01-05 945-218-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2022-01-05 945-455-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2022-01-05 945-468-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2022-01-05 945-810-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2022-01-05 945-910-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2022-01-05 945-910-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2021-12-30 945-223-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CARROLLTON TX
2021-12-30 945-223-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CARROLLTON TX
2021-12-30 945-223-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CARROLLTON TX
2021-12-30 945-666-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J PALMER TX
2021-12-28 945-300-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEWISVILLE TX
2021-12-28 945-300-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEWISVILLE TX
2021-12-28 945-300-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEWISVILLE TX
2021-12-28 945-356-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DLFTWTARPT TX
2021-12-23 945-386-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FORNEY TX
2021-12-23 945-386-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FORNEY TX
2021-12-23 945-386-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FORNEY TX
2021-12-23 945-386-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FORNEY TX
2021-12-22 945-237-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J MCKINNEY TX
2021-12-21 945-236-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J ROCKWALL TX
2021-12-21 945-745-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J ROYSE CITY TX
2021-12-13 945-236-7XXX 7000–7999Assigned METROPCS, INC. 5562 ROCKWALL TX
2021-12-13 945-236-8XXX 8000–8999Assigned METROPCS, INC. 5562 ROCKWALL TX
2021-12-02 945-226-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C RED OAK TX
2021-12-02 945-226-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C RED OAK TX
2021-12-02 945-231-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C SEAGOVILLE TX
2021-12-02 945-231-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C SEAGOVILLE 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.