NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 501
ONVOY, LLC - AR 15
BANDWIDTH.COM CLEC, LLC - AR 5
CSC WIRELESS, LLC 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 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
2021-07-15 501-393-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F PANGBURN AR
2021-07-15 501-419-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F ROSE BUD AR
2021-07-15 501-427-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F MAUMELLE AR
2021-07-15 501-432-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F NIMROD AR
2021-07-15 501-440-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F SO FOURCHE AR
2021-07-15 501-522-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F BENTON AR
2021-07-15 501-662-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F PERRY AR
2021-07-15 501-755-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F QUITMAN AR
2021-07-15 501-808-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F VILONIA AR
2021-07-15 501-849-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F ENOLA AR
2021-07-14 501-409-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F BENTON AR
2021-07-14 501-409-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F BENTON AR
2021-07-14 501-409-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F BENTON AR
2021-07-14 501-460-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F GREENBRIER AR
2021-07-12 501-394-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F CABOT AR
2021-07-12 501-394-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F CABOT AR
2021-07-12 501-449-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F CABOT AR
2021-07-12 501-451-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-07-12 501-451-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-07-12 501-451-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-07-12 501-451-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-07-12 501-452-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F MORRILTON AR
2021-07-12 501-452-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F MORRILTON AR
2021-07-12 501-474-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F MCRAE AR
2021-07-12 501-600-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F PLEASANTPL AR
2021-07-12 501-667-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F KENSETT AR
2021-07-12 501-961-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F SCOTT AR
2021-07-06 501-409-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F BENTON AR
2021-07-06 501-417-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F JUDSONIA AR
2021-07-06 501-417-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F JUDSONIA AR
2021-07-02 501-496-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F REDFIELD AR
2021-06-29 501-567-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F CENTER RDG AR
2021-06-24 501-645-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MORRILTON AR
2021-06-24 501-645-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORRILTON AR
2021-06-23 501-461-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F BAUXITE AR
2021-06-23 501-461-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F BAUXITE AR
2021-06-23 501-468-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F CLEVELAND AR
2021-06-23 501-484-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F SPRINGLAKE AR
2021-06-23 501-484-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F SPRINGLAKE AR
2021-06-23 501-488-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F BRADFORD AR
2021-06-23 501-493-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F CRYSTALSPG AR
2021-06-23 501-494-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F JESSIEVL AR
2021-06-23 501-494-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F JESSIEVL AR
2021-06-23 501-495-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2021-06-23 501-512-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F BRYANTCGVL AR
2021-06-23 501-512-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F BRYANTCGVL AR
2021-06-08 501-387-7XXX 7000–7999Assigned VONAGE AMERICA LLC 197D BEEBE AR
2021-06-07 501-461-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H BAUXITE AR
2021-06-07 501-488-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H BRADFORD AR
2021-06-07 501-512-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BRYANTCGVL AR

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.