NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

67 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 479
NEW CINGULAR WIRELESS PCS, LLC - IL 40
ONVOY, LLC - AR 13
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 10
INTRADO COMMUNICATIONS, LLC 2
TELNYX 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
2018-10-16 479-352-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-352-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-370-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-370-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-370-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-370-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-16 479-974-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F FORT SMITH AR
2018-10-10 479-326-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BENTONVL AR
2018-10-10 479-329-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2018-10-10 479-551-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORT SMITH AR
2018-10-04 479-508-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C OZARK AR
2018-10-02 479-385-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F MENA AR
2018-09-28 479-345-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F NATURALDAM AR
2018-09-27 479-275-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON AR
2018-09-27 479-774-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLARKSVL AR
2018-09-21 479-334-1XXX 1000–1999Assigned METROPCS, INC. 5562 SPRINGDALE AR
2018-09-21 479-343-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F VAN BUREN AR
2018-09-21 479-343-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F VAN BUREN AR
2018-09-20 479-339-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F BOLES AR
2018-09-20 479-341-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F CENTERTON AR
2018-09-20 479-342-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F GARFIELD AR
2018-09-20 479-346-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F GATEWAY AR
2018-09-20 479-348-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F MAYSVILLE AR
2018-09-20 479-349-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F SULPHURSPG AR
2018-09-19 479-974-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT SMITH AR
2018-09-17 479-227-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F WALDRON AR
2018-09-17 479-244-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F EUREKA SPG AR
2018-09-17 479-255-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F HACKETT AR
2018-09-17 479-269-9XXX 9000–9999Assigned ONVOY, LLC - AR 348F MANSFIELD AR
2018-09-17 479-275-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F CHARLESTON AR
2018-09-17 479-279-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F VAN BUREN AR
2018-09-17 479-309-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F MIDLAND AR
2018-09-17 479-322-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F GREENWOOD AR
2018-09-17 479-326-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F BENTONVL AR
2018-09-17 479-329-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F ALMA AR
2018-09-17 479-332-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F FAYETTEVL AR
2018-09-17 479-333-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F ELMSPRINGS AR
2018-09-17 479-334-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F SPRINGDALE AR
2018-09-17 479-335-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F ROGERS AR
2018-09-17 479-344-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F GRAVETTE AR
2018-09-17 479-427-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F SILOAM SPG AR
2018-09-17 479-488-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F PEA RIDGE 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.