NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 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, all time — NPA 574
ONVOY SPECTRUM, LLC 47
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
2025-01-02 574-227-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H MILLWOOD IN
2024-05-22 574-363-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H BOURBON IN
2024-05-22 574-380-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H ATWOOD IN
2024-04-01 574-577-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ROYAL CTR IN
2024-04-01 574-783-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H LUCERNE IN
2022-01-14 574-374-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H GOSHEN IN
2021-12-28 574-710-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-12-28 574-710-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-11-22 574-901-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H LOGANSPORT IN
2021-11-09 574-374-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H GOSHEN IN
2021-11-09 574-374-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H GOSHEN IN
2021-10-20 574-365-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H FULTON IN
2021-10-20 574-365-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H FULTON IN
2021-10-20 574-369-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H ELKHART IN
2021-10-20 574-369-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ELKHART IN
2021-06-22 574-345-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-05-20 574-758-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H WALTON IN
2021-05-20 574-944-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H TWELVEMILE IN
2021-05-15 574-382-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H MACY IN
2021-05-15 574-739-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LOGANSPORT IN
2021-05-14 574-365-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H FULTON IN
2021-05-14 574-701-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H GALVESTON IN
2021-05-13 574-652-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H BURROWS IN
2021-05-13 574-686-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CAMDEN IN
2021-05-13 574-859-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H DEER CREEK IN
2021-05-13 574-893-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H AKRON IN
2021-05-11 574-766-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CLAYPOOL IN
2021-05-10 574-358-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MIDDLEBURY IN
2021-05-10 574-369-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H ELKHART IN
2021-05-10 574-374-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H GOSHEN IN
2021-05-10 574-498-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H TIPPECANOE IN
2021-05-10 574-600-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CULVER IN
2021-05-10 574-707-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H OSCEOLA IN
2021-05-10 574-875-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H DUNLAP IN
2021-05-10 574-900-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WAKARUSA IN
2021-05-10 574-966-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H BRISTOL IN
2021-05-10 574-977-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WYATT IN
2021-04-27 574-888-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2020-06-25 574-710-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2020-06-25 574-710-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2020-06-25 574-710-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2019-09-18 574-710-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN

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.