NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 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 870
ONVOY, LLC - AR 5
AHOI 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
2015-01-16 870-331-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F HOPE AR
2015-01-16 870-406-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F GURDON AR
2015-01-16 870-455-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F NASHVILLE AR
2015-01-16 870-899-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BODCAW AR
2015-01-16 870-978-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMITY AR
2015-01-08 870-447-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LESLIE AR
2015-01-08 870-496-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WITTS SPG AR
2015-01-08 870-545-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RUDD AR
2015-01-08 870-749-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OAK GROVE AR
2014-12-19 870-241-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ROE AR
2014-12-19 870-362-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WYNNE AR
2014-12-19 870-410-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILSON AR
2014-12-19 870-551-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J W MEMPHIS AR
2014-12-19 870-637-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALNUT RDG AR
2014-12-19 870-744-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TUPELO AR
2014-12-17 870-201-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWPORT AR
2014-12-17 870-264-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OIL TROUGH AR
2014-12-17 870-455-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NASHVILLE AR
2014-12-17 870-573-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PARAGOULD AR
2014-12-17 870-576-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OSCEOLA AR
2014-12-17 870-755-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PARKIN AR
2014-12-16 870-293-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F ARKADLPHIA AR
2014-12-12 870-252-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 GRUBBS AR
2014-12-12 870-339-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUGHES AR
2014-12-12 870-474-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOPE AR
2014-12-12 870-537-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JOINER AR
2014-12-12 870-559-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MARION AR
2014-12-12 870-594-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FORREST CY AR
2014-12-12 870-697-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HICKORYRDG AR
2014-12-12 870-767-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TUCKERMAN AR
2014-12-12 870-768-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MORO AR
2014-12-11 870-281-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BLYTHEVL AR
2014-12-11 870-293-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ARKADLPHIA AR
2014-12-11 870-319-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRINKLEY AR
2014-12-11 870-384-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CAVE CITY AR
2014-12-11 870-477-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CASH AR
2014-12-11 870-657-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BLACKFIHLK AR
2014-12-11 870-667-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHDOWN AR
2014-12-11 870-668-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CONCORD AR
2014-12-11 870-805-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BATESVILLE AR
2014-12-11 870-823-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CRAWFODSVL AR
2014-12-11 870-878-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BLACK ROCK AR
2014-12-10 870-271-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISBURG AR
2014-12-09 870-259-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 KNOBEL AR
2014-12-09 870-282-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ST CHARLES AR
2014-12-09 870-457-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WHEATLEY AR
2014-12-09 870-462-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HOLLYGROVE AR
2014-12-09 870-522-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEONARD AR
2014-12-09 870-548-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 GILLETT AR
2014-12-09 870-871-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROSSTON 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.