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
2020-01-06 501-710-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2020-01-06 501-710-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2020-01-06 501-817-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F FERNDALE AR
2020-01-06 501-817-9XXX 9000–9999Assigned ONVOY, LLC - AR 348F FERNDALE AR
2020-01-06 501-825-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F GREERSFRRY AR
2020-01-06 501-825-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F GREERSFRRY AR
2020-01-03 501-292-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2020-01-03 501-292-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2019-12-17 501-273-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CONWAY AR
2019-12-17 501-759-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIGELOW AR
2019-12-17 501-759-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIGELOW AR
2019-12-16 501-381-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F BENTON AR
2019-12-16 501-381-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F BENTON AR
2019-12-12 501-271-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PALARM AR
2019-12-12 501-290-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F SEARCY AR
2019-12-12 501-290-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F SEARCY AR
2019-12-12 501-424-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CABOT AR
2019-12-05 501-239-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEEBE AR
2019-11-22 501-359-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2019-11-22 501-359-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2019-11-22 501-359-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2019-11-15 501-710-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2019-11-15 501-710-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2019-11-11 501-419-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F ROSE BUD AR
2019-11-11 501-457-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL AR
2019-11-08 501-630-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C LITTLEROCK AR
2019-11-08 501-770-0XXX 0000–0999Assigned TELNYX LLC 073H WRIGHTSVL AR
2019-10-29 501-852-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CONWAY AR
2019-10-16 501-382-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2019-10-16 501-382-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2019-10-14 501-359-4XXX 4000–4999Assigned E. RITTER COMMUNICATIONS, LLC 128L HOTSPRINGS AR
2019-10-11 501-770-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F WRIGHTSVL AR
2019-10-11 501-770-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F WRIGHTSVL AR
2019-10-11 501-790-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F PARON AR
2019-10-11 501-790-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F PARON AR
2019-10-09 501-263-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-263-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-274-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-274-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-274-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-274-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-274-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-274-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-355-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-355-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-355-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-09 501-355-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2019-10-08 501-274-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H LITTLEROCK AR
2019-09-26 501-448-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FERNDALE AR
2019-09-18 501-710-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H LITTLEROCK 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.