NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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, all time — NPA 479
LEVEL 3 COMMUNICATIONS, LLC - AR 118
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
2024-06-25 479-542-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORT SMITH AR
2024-06-18 479-800-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FAYETTEVL AR
2024-03-06 479-582-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FAYETTEVL AR
2024-02-28 479-355-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DANVILLE AR
2022-10-04 479-449-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 RUSSELLVL AR
2022-04-26 479-480-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FAYETTEVL AR
2021-12-23 479-336-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LONDON AR
2021-12-23 479-390-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ALTUS AR
2021-12-23 479-472-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 RATCLIFF AR
2021-12-23 479-473-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SCRANTON AR
2021-12-23 479-482-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DOVER AR
2021-12-23 479-699-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DARDANELLE AR
2021-12-23 479-703-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LAMAR AR
2021-12-22 479-470-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HECTOR AR
2021-11-05 479-429-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HARTMAN AR
2021-11-05 479-440-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CLARKSVL AR
2021-11-05 479-679-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SALUS AR
2021-06-10 479-475-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SUBIACO AR
2021-04-28 479-425-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ALMA AR
2021-03-12 479-433-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WALDRON AR
2020-11-23 479-438-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PARIS AR
2020-08-11 479-341-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CENTERTON AR
2020-07-28 479-379-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SPRINGDALE AR
2020-06-01 479-206-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BOONEVILLE AR
2019-11-25 479-376-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORUM AR
2019-11-25 479-377-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 AURORA AR
2019-11-21 479-325-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HUNTSVILLE AR
2019-10-22 479-223-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 RUSSELLVL AR
2019-05-29 479-239-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 EUREKA SPG AR
2019-04-16 479-360-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BENTONVL AR
2019-03-26 479-974-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORT SMITH AR
2018-04-17 479-318-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SPRINGDALE AR
2018-02-14 479-327-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 STRICKLER AR
2018-02-14 479-328-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MORROW AR
2018-01-30 479-300-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FARMINGTON AR
2018-01-30 479-400-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PRAIRIEGRV AR
2018-01-30 479-500-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LINCOLN AR
2018-01-23 479-879-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FAYETTEVL AR
2017-11-07 479-257-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ROGERS AR
2017-06-06 479-228-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SILOAM SPG AR
2017-05-25 479-241-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ST PAUL AR
2017-05-24 479-210-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DRAKES CRK AR
2017-05-24 479-213-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 OZARK AR
2017-05-24 479-217-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MULBERRY AR
2017-05-24 479-240-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ELKINS AR
2017-05-24 479-294-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WEST FORK AR
2017-05-24 479-662-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MOUNTAINBG AR
2017-05-24 479-765-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WINSLOW AR
2017-05-19 479-345-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 NATURALDAM AR
2017-05-19 479-789-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HINDSVILLE AR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.