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
2021-03-08 501-409-0XXX 0000–0999Assigned TELNYX LLC 073H BENTON AR
2021-03-08 501-451-1XXX 1000–1999Assigned IP HORIZON LLC 515J LITTLEROCK AR
2021-03-04 501-387-1XXX 1000–1999Assigned TELNYX LLC 073H BEEBE AR
2021-02-24 501-426-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CONWAY AR
2021-02-24 501-426-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CONWAY AR
2021-02-11 501-389-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C SEARCY AR
2021-02-10 501-382-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F LONSDALE AR
2021-02-10 501-397-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F REDFIELD AR
2021-02-10 501-429-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F HEBER SPG AR
2021-02-10 501-429-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F HEBER SPG AR
2021-02-10 501-439-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F ENGLAND AR
2021-02-10 501-439-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F ENGLAND AR
2021-02-10 501-449-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F CABOT AR
2021-02-10 501-449-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F CABOT AR
2021-02-10 501-567-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F CENTER RDG AR
2021-02-10 501-567-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F CENTER RDG AR
2021-02-10 501-798-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F PINNACLE AR
2021-02-10 501-798-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F PINNACLE AR
2021-02-03 501-356-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 JESSIEVL AR
2021-01-29 501-667-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F KENSETT AR
2021-01-29 501-667-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F KENSETT AR
2021-01-29 501-667-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F KENSETT AR
2021-01-29 501-961-8XXX 8000–8999Assigned AIRUS, INC. - AR 578H SCOTT AR
2021-01-27 501-441-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H LITTLEROCK AR
2021-01-25 501-665-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LITTLEROCK AR
2021-01-25 501-665-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H LITTLEROCK AR
2021-01-22 501-466-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F COY AR
2021-01-22 501-466-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F COY AR
2021-01-22 501-474-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F MCRAE AR
2021-01-22 501-474-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F MCRAE AR
2021-01-20 501-441-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-01-20 501-441-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-01-20 501-441-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-01-20 501-441-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-01-20 501-441-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-01-14 501-449-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CABOT AR
2021-01-14 501-449-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CABOT AR
2021-01-14 501-449-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CABOT AR
2021-01-14 501-449-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CABOT AR
2021-01-14 501-449-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CABOT AR
2021-01-14 501-449-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CABOT AR
2021-01-13 501-961-0XXX 0000–0999Assigned METROPCS, INC. 5562 SCOTT AR
2021-01-12 501-464-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2021-01-12 501-464-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2021-01-12 501-464-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2021-01-12 501-464-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2020-12-22 501-437-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LONOKE AR
2020-12-14 501-430-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTON AR
2020-12-07 501-602-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J BAUXITE AR
2020-11-23 501-361-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F 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.