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
2018-08-07 870-360-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2018-08-07 870-730-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2018-07-18 870-380-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PINE BLUFF AR
2018-07-18 870-444-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 EL DORADO AR
2018-07-18 870-970-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2018-06-28 870-724-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F GURDON AR
2018-06-19 870-388-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SARATOGA AR
2018-06-19 870-921-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LEWISVILLE AR
2018-06-15 870-218-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D PINE BLUFF AR
2018-06-13 870-528-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JESUP AR
2018-06-12 870-739-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARION AR
2018-06-06 870-805-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BATESVILLE AR
2018-05-31 870-433-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F CHEROKEVLG AR
2018-05-30 870-393-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2018-05-11 870-955-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F HARDY AR
2018-05-09 870-724-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F GURDON AR
2018-05-09 870-899-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BODCAW AR
2018-05-08 870-393-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JONESBORO AR
2018-05-08 870-482-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CARAWAY AR
2018-05-08 870-486-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MONETTE AR
2018-05-08 870-522-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LEONARD AR
2018-05-08 870-528-4XXX 4000–4999Assigned BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 JESUP AR
2018-05-08 870-566-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BLOOMNGGRV AR
2018-05-08 870-869-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 IMBODEN AR
2018-05-08 870-970-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2018-04-27 870-724-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C GURDON AR
2018-04-27 870-985-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C MOUNT IDA AR
2018-04-26 870-399-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BLEVINS AR
2018-04-23 870-202-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 POCAHONTAS AR
2018-04-23 870-227-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 TRUMANN AR
2018-04-23 870-396-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DELAPLAINE AR
2018-04-23 870-651-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LAKE CITY AR
2018-04-23 870-973-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BAY AR
2018-04-20 870-900-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F VIOLA AR
2018-04-19 870-343-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 TURRELL AR
2018-04-19 870-477-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CASH AR
2018-04-19 870-507-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C MIDWAY AR
2018-04-19 870-578-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HARRISBURG AR
2018-04-19 870-657-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BLACKFIHLK AR
2018-04-19 870-792-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 EARLE AR
2018-04-19 870-799-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 NEWARK AR
2018-04-19 870-823-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CRAWFODSVL AR
2018-04-19 870-878-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BLACK ROCK AR
2018-04-09 870-751-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ASH FLAT AR
2018-04-04 870-662-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C MARIANNA AR
2018-03-20 870-252-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C GRUBBS AR
2018-03-12 870-360-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2018-03-12 870-360-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2018-03-12 870-614-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C LUXORA AR
2018-03-09 870-341-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PINE BLUFF 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.