NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 605
NEW CINGULAR WIRELESS PCS, LLC - IL 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 1
AHOI LLC 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
2020-07-24 605-525-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G LK PRESTON SD
2020-07-24 605-525-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G LK PRESTON SD
2020-07-24 605-633-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G FLANDREAU SD
2020-07-24 605-636-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G MADISON SD
2020-07-24 605-636-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G MADISON SD
2020-07-24 605-640-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G MCINTOSH SD
2020-07-24 605-640-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G MCINTOSH SD
2020-07-24 605-667-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G HARISBGTEA SD
2020-07-24 605-667-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G HARISBGTEA SD
2020-07-24 605-815-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G CHAMBERLAN SD
2020-07-24 605-815-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G CHAMBERLAN SD
2020-07-24 605-846-1XXX 1000–1999Assigned ONVOY, LLC - SD 162G ABERDEEN SD
2020-07-24 605-846-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G ABERDEEN SD
2020-07-24 605-861-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G DE SMET SD
2020-07-24 605-861-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G DE SMET SD
2020-07-24 605-864-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G FLANDREAU SD
2020-07-24 605-924-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G MILBANK SD
2020-07-24 605-924-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G MILBANK SD
2020-07-23 605-303-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G WATERTOWN SD
2020-07-23 605-349-1XXX 1000–1999Assigned ONVOY, LLC - SD 162G WESTJASPER SD
2020-07-23 605-349-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G WESTJASPER SD
2020-07-23 605-450-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G REDFIELD SD
2020-07-23 605-460-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G REDFIELD SD
2020-07-23 605-501-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G SIOUX FLS SD
2020-07-23 605-501-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G SIOUX FLS SD
2020-07-23 605-674-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G BIGSTONECY SD
2020-07-23 605-674-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G BIGSTONECY SD
2020-07-23 605-702-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G STURGIS SD
2020-07-23 605-702-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G STURGIS SD
2020-07-23 605-741-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G VERMILLION SD
2020-07-23 605-741-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G VERMILLION SD
2020-07-23 605-776-9XXX 9000–9999Assigned ONVOY, LLC - SD 162G PIERRE SD
2020-07-23 605-827-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G VOLGA SD
2020-07-23 605-827-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G VOLGA SD
2020-07-23 605-975-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G YANKTON SD
2020-07-23 605-975-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G YANKTON SD
2020-07-23 605-979-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G NOSIOUX CY SD
2020-07-23 605-979-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G NOSIOUX CY SD
2020-07-23 605-981-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2020-07-23 605-981-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2020-07-16 605-699-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA SD-LLC 693G BELLEFORCH SD
2020-06-29 605-550-3XXX 3000–3999Assigned AIRUS, INC. - SD 580H MITCHELL SD
2020-06-19 605-606-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SIOUX FLS SD
2020-06-19 605-606-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SIOUX FLS SD
2020-06-19 605-606-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SIOUX FLS SD
2020-06-17 605-566-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G SPEARFISH SD
2020-06-17 605-566-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G SPEARFISH SD
2020-06-17 605-656-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G MITCHELL SD
2020-06-17 605-656-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G MITCHELL SD
2020-06-12 605-545-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RAPID CITY SD

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.