NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 312
BANDWIDTH.COM CLEC, LLC - IL 1
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
2023-05-19 312-773-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2023-05-19 312-773-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2023-05-19 312-773-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2023-05-03 312-244-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2023-05-03 312-244-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2022-09-19 312-910-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-09-19 312-910-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-07-28 312-638-0XXX 0000–0999Assigned TELNYX LLC 073H CHICGOZN01 IL
2022-05-23 312-278-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2022-05-23 312-893-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2022-05-20 312-423-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-05-10 312-752-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2022-05-10 312-752-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2022-04-29 312-680-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-04-29 312-680-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-02-24 312-932-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-12-08 312-463-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-12-08 312-674-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-12-08 312-759-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-12-08 312-879-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-12-08 312-931-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-12-08 312-960-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-12-08 312-993-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-09-07 312-278-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2020-12-15 312-380-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-12-15 312-463-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-10-12 312-530-0XXX 0000–0999Assigned TELNYX LLC 073H CHICGOZN01 IL
2020-10-12 312-530-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-10-12 312-530-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-10-02 312-530-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-10-02 312-682-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-10-02 312-682-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-08-11 312-530-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2020-08-11 312-530-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.