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
2017-03-28 870-690-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C MCGEHEE AR
2017-03-21 870-710-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F CHEROKEVLG AR
2017-03-15 870-360-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2017-03-15 870-360-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2017-03-15 870-360-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2017-03-15 870-724-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F GURDON AR
2017-03-15 870-899-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F BODCAW AR
2017-03-06 870-320-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C SHERIDAN AR
2017-02-28 870-899-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F BODCAW AR
2017-02-08 870-938-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C JONESBORO AR
2017-02-03 870-444-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 EL DORADO AR
2017-02-01 870-406-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F GURDON AR
2017-01-23 870-632-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAKE VLG AR
2017-01-23 870-938-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2017-01-11 870-907-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F MAMMOTHSPG AR
2016-12-28 870-999-9XXX 9000–9999Assigned WINDSTREAM ARKANSAS, INC. 1691 CROSSETT AR
2016-12-12 870-710-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F CHEROKEVLG AR
2016-11-28 870-900-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 VIOLA AR
2016-11-22 870-232-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MT HOME AR
2016-11-22 870-291-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MELBOURNE AR
2016-11-22 870-676-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MIDWAY AR
2016-11-22 870-710-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CHEROKEVLG AR
2016-11-22 870-750-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HORSEHBEND AR
2016-11-18 870-466-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARREN AR
2016-11-18 870-466-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARREN AR
2016-11-11 870-273-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-11-11 870-340-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-11-11 870-340-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-11-11 870-627-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-11-11 870-627-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-11-11 870-627-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-11-10 870-415-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C CROSSETT AR
2016-11-02 870-907-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MAMMOTHSPG AR
2016-11-02 870-971-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SALEM AR
2016-10-14 870-212-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L PARAGOULD AR
2016-10-05 870-201-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWPORT AR
2016-09-15 870-232-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 MT HOME AR
2016-09-14 870-520-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2016-09-14 870-520-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2016-09-01 870-212-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 PARAGOULD AR
2016-09-01 870-484-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHERIDAN AR
2016-08-31 870-318-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CHERRY VLY AR
2016-08-25 870-406-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F GURDON AR
2016-08-16 870-631-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C CORNING AR
2016-08-04 870-341-4XXX 4000–4999Assigned METROPCS, INC. 5562 PINE BLUFF AR
2016-08-04 870-671-0XXX 0000–0999Assigned METROPCS, INC. 5562 PINE BLUFF AR
2016-07-29 870-912-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C NASHVILLE AR
2016-07-26 870-333-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-07-26 870-333-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2016-07-26 870-333-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 JONESBORO 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.