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
2020-03-05 501-647-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-03-05 501-647-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-03-05 501-647-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-03-05 501-647-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-03-05 501-648-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-03-05 501-648-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-03-05 501-648-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-03-05 501-648-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2020-02-25 501-402-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F GREENBRIER AR
2020-02-24 501-393-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F PANGBURN AR
2020-02-18 501-456-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F JUDSONIA AR
2020-02-18 501-530-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BALD KNOB AR
2020-02-12 501-299-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F KENSETT AR
2020-02-10 501-440-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F SO FOURCHE AR
2020-02-06 501-381-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTON AR
2020-02-06 501-432-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F NIMROD AR
2020-02-06 501-662-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F PERRY AR
2020-02-04 501-330-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F WYE AR
2020-02-04 501-808-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F VILONIA AR
2020-02-03 501-294-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F MORGANTON AR
2020-01-31 501-356-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JESSIEVL AR
2020-01-31 501-387-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BEEBE AR
2020-01-31 501-389-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F SEARCY AR
2020-01-28 501-382-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2020-01-28 501-382-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2020-01-25 501-385-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-25 501-385-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-25 501-900-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F LITTLEROCK AR
2020-01-25 501-900-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F LITTLEROCK AR
2020-01-25 501-900-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F LITTLEROCK AR
2020-01-25 501-900-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F LITTLEROCK AR
2020-01-23 501-759-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BIGELOW AR
2020-01-23 501-849-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F ENOLA AR
2020-01-22 501-359-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-22 501-359-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-22 501-359-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-22 501-363-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-22 501-363-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-22 501-363-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-01-17 501-306-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F QUITMAN AR
2020-01-16 501-314-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENBRIER AR
2020-01-16 501-335-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F DAMASCUS AR
2020-01-10 501-505-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CONWAY AR
2020-01-07 501-207-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F SEARCY AR
2020-01-07 501-271-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F PALARM AR
2020-01-07 501-271-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F PALARM AR
2020-01-07 501-298-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F SPRINGLAKE AR
2020-01-07 501-298-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F SPRINGLAKE AR
2020-01-07 501-305-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F SEARCY AR
2020-01-07 501-322-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F KENSETT 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.