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
2021-01-05 945-888-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C BLUE RIDGE TX
2021-01-05 945-999-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C BRISTOL TX
2021-01-05 945-999-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C BRISTOL TX
2020-12-30 945-336-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-12-30 945-336-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-12-30 945-336-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-12-30 945-336-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-12-30 945-336-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-12-30 945-336-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-12-08 945-300-3XXX 3000–3999Assigned METROPCS, INC. 5562 LEWISVILLE TX
2020-12-08 945-910-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C DALLAS TX
2020-12-03 945-900-5XXX 5000–5999Assigned METROPCS, INC. 5562 WAXAHACHIE TX
2020-12-03 945-999-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BRISTOL TX
2020-12-02 945-336-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-12-02 945-336-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-12-02 945-800-8XXX 8000–8999Assigned METROPCS, INC. 5562 PLANO TX
2020-11-27 945-333-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-333-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-11-27 945-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H GRANDPRARI TX
2020-11-27 945-348-6XXX 6000–6999Assigned FRACTEL, LLC 965H FRISCO TX
2020-11-27 945-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H DLFTWTARPT TX
2020-11-27 945-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H DLFTWTARPT TX
2020-11-27 945-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H COMBINE TX
2020-11-27 945-529-3XXX 3000–3999Assigned FRACTEL, LLC 965H VENUS TX
2020-11-27 945-529-9XXX 9000–9999Assigned FRACTEL, LLC 965H VENUS TX
2020-11-27 945-600-0XXX 0000–0999Assigned FRACTEL, LLC 965H CELINA TX
2020-11-27 945-888-0XXX 0000–0999Assigned TELNYX LLC 073H BLUE RIDGE TX
2020-11-25 945-444-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-25 945-444-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-11-20 945-222-2XXX 2000–2999Assigned USFON, INC. - TX 473F CRANDALL TX
2020-11-20 945-300-0XXX 0000–0999Assigned USFON, INC. - TX 473F LEWISVILLE TX
2020-11-20 945-333-3XXX 3000–3999Assigned USFON, INC. - TX 473F MCKINNEY TX
2020-11-20 945-400-0XXX 0000–0999Assigned USFON, INC. - TX 473F FRISCO TX
2020-11-20 945-444-4XXX 4000–4999Assigned USFON, INC. - TX 473F GRANDPRARI TX
2020-11-20 945-500-0XXX 0000–0999Assigned USFON, INC. - TX 473F CARROLLTON TX
2020-11-20 945-666-6XXX 6000–6999Assigned USFON, INC. - TX 473F PALMER 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.