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
2021-12-02 945-236-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C ROCKWALL TX
2021-12-02 945-236-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C ROCKWALL TX
2021-12-02 945-236-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C ROCKWALL TX
2021-11-29 945-223-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CARROLLTON TX
2021-11-24 945-223-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C CARROLLTON TX
2021-11-24 945-223-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C CARROLLTON TX
2021-11-24 945-224-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C MCKINNEY TX
2021-11-22 945-216-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2021-11-22 945-216-7XXX 7000–7999Assigned METROPCS, INC. 5562 FRISCO TX
2021-11-22 945-224-5XXX 5000–5999Assigned METROPCS, INC. 5562 MCKINNEY TX
2021-11-22 945-224-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MCKINNEY TX
2021-11-22 945-224-8XXX 8000–8999Assigned METROPCS, INC. 5562 MCKINNEY TX
2021-11-22 945-529-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 VENUS TX
2021-11-19 945-766-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TERRELL TX
2021-11-17 945-236-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROCKWALL TX
2021-11-17 945-236-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ROCKWALL TX
2021-11-17 945-236-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ROCKWALL TX
2021-11-17 945-236-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROCKWALL TX
2021-11-11 945-235-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DALLAS TX
2021-11-08 945-202-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F NEVADA TX
2021-11-05 945-232-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-232-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-05 945-233-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2021-11-03 945-200-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H ENNIS TX
2021-11-03 945-200-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H ENNIS TX
2021-11-03 945-228-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CEDAR HILL TX
2021-11-03 945-228-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CEDAR HILL TX
2021-11-03 945-231-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SEAGOVILLE TX
2021-11-03 945-255-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H ANNA TX
2021-11-03 945-255-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H ANNA TX
2021-11-02 945-230-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2021-11-02 945-230-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 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.