NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

6 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, 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
2005-01-11 870-648-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2005-01-11 870-648-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2005-01-05 870-292-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HOPE AR
2004-12-02 870-217-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWPORT AR
2004-11-19 870-495-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NEWPORT AR
2004-11-19 870-559-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARION AR
2004-11-19 870-565-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PARAGOULD AR
2004-10-18 870-403-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARKADLPHIA AR
2004-10-05 870-576-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 OSCEOLA AR
2004-09-29 870-629-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 W MEMPHIS AR
2004-08-04 870-292-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HOPE AR
2004-08-04 870-345-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ARKADLPHIA AR
2004-08-04 870-376-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BATESVILLE AR
2004-08-04 870-390-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CAMDEN AR
2004-08-04 870-594-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2004-08-04 870-639-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 EL DORADO AR
2004-08-04 870-776-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BLYTHEVL AR
2004-08-03 870-565-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PARAGOULD AR
2004-08-03 870-626-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MAGNOLIA AR
2004-06-01 870-635-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2004-05-27 870-824-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BLYTHEVL AR
2004-04-22 870-587-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WYNNE AR
2004-04-07 870-222-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MCGEHEE AR
2004-04-07 870-224-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MONTICELLO AR
2004-04-07 870-298-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MARIANNA AR
2004-04-07 870-466-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WARREN AR
2004-04-07 870-533-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 STAMPS AR
2004-04-07 870-565-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARAGOULD AR
2004-04-07 870-565-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARAGOULD AR
2004-04-07 870-725-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SMACKOVER AR
2004-04-07 870-853-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HAMBURG AR
2004-03-09 870-637-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WALNUT RDG AR
2004-03-09 870-637-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WALNUT RDG AR
2004-02-13 870-413-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2004-02-03 870-265-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAKE VLG AR
2004-01-20 870-559-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L MARION AR
2003-12-23 870-225-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L W MEMPHIS AR
2003-12-23 870-252-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L GRUBBS AR
2003-12-23 870-343-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L TURRELL AR
2003-12-23 870-442-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L CHERRY VLY AR
2003-12-23 870-477-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L CASH AR
2003-12-23 870-519-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L FORREST CY AR
2003-12-23 870-527-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L BRINKLEY AR
2003-12-23 870-537-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JOINER AR
2003-12-23 870-563-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L OSCEOLA AR
2003-12-23 870-565-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L PARAGOULD AR
2003-12-23 870-569-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L BATESVILLE AR
2003-12-23 870-578-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L HARRISBURG AR
2003-12-23 870-587-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L WYNNE AR
2003-12-23 870-614-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L LUXORA 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.