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
2016-07-14 870-804-9XXX 9000–9999Assigned WINDSTREAM ARKANSAS, INC. 1691 TUCKERMAN AR
2016-07-11 870-302-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2016-07-07 870-302-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HARRISON AR
2016-06-16 870-397-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F HOPE AR
2016-06-15 870-271-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HARRISBURG AR
2016-06-15 870-298-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARIANNA AR
2016-06-15 870-301-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUGUSTA AR
2016-06-15 870-417-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 LAKE VLG AR
2016-06-15 870-753-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HELENA AR
2016-06-15 870-826-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOPE AR
2016-06-15 870-831-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 HAMBURG AR
2016-06-14 870-913-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SWIFTON AR
2016-06-14 870-955-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F HARDY AR
2016-06-08 870-520-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JONESBORO AR
2016-05-24 870-717-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTHEIMER AR
2016-05-24 870-717-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTHEIMER AR
2016-05-20 870-271-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARRISBURG AR
2016-05-13 870-262-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BATESVILLE AR
2016-05-06 870-360-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2016-05-02 870-345-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ARKADLPHIA AR
2016-04-28 870-340-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2016-04-26 870-587-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C WYNNE AR
2016-04-14 870-212-7XXX 7000–7999Assigned METROPCS, INC. 5562 PARAGOULD AR
2016-04-14 870-532-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BLYTHEVL AR
2016-04-05 870-280-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HARRISON AR
2016-03-18 870-648-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2016-03-15 870-949-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAGNOLIA AR
2016-03-15 870-949-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAGNOLIA AR
2016-03-11 870-330-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C TEXARKANA AR
2016-02-19 870-451-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F NASHVILLE AR
2016-02-19 870-451-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F NASHVILLE AR
2016-02-17 870-600-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F ASHDOWN AR
2016-02-17 870-600-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F ASHDOWN AR
2016-02-16 870-466-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 WARREN AR
2016-02-11 870-729-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F HOPE AR
2016-02-11 870-729-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F HOPE AR
2016-02-09 870-568-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F ARKADLPHIA AR
2016-02-09 870-568-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F ARKADLPHIA AR
2016-01-14 870-970-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C FORREST CY AR
2016-01-11 870-200-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NASHVILLE AR
2016-01-08 870-600-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C ASHDOWN AR
2015-12-24 870-333-5XXX 5000–5999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2015-12-18 870-501-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCGEHEE AR
2015-12-17 870-586-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PARAGOULD AR
2015-12-17 870-592-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2015-12-17 870-592-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2015-11-23 870-202-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 POCAHONTAS AR
2015-10-30 870-260-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ARKADLPHIA AR
2015-10-30 870-417-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C LAKE VLG AR
2015-10-28 870-987-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MALLARD PT 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.