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
2012-01-04 870-677-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C EL DORADO AR
2011-12-27 870-362-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WYNNE AR
2011-12-27 870-752-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRINKLEY AR
2011-12-14 870-581-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORREST CY AR
2011-12-08 870-280-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2011-12-08 870-281-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLYTHEVL AR
2011-12-08 870-281-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLYTHEVL AR
2011-12-08 870-300-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DERMOTT AR
2011-12-08 870-355-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EUDORA AR
2011-12-08 870-376-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BATESVILLE AR
2011-12-08 870-502-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2011-12-08 870-540-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2011-12-08 870-571-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2011-12-08 870-571-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2011-12-08 870-730-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2011-12-08 870-730-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2011-12-08 870-753-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HELENA AR
2011-12-08 870-759-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WALNUT RDG AR
2011-12-08 870-826-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOPE AR
2011-12-08 870-833-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CAMDEN AR
2011-12-08 870-949-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAGNOLIA AR
2011-11-30 870-455-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 NASHVILLE AR
2011-11-28 870-224-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 MONTICELLO AR
2011-11-28 870-587-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WYNNE AR
2011-11-28 870-667-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 ASHDOWN AR
2011-11-17 870-586-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARAGOULD AR
2011-11-17 870-586-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARAGOULD AR
2011-11-17 870-636-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 W MEMPHIS AR
2011-11-17 870-668-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CONCORD AR
2011-11-17 870-945-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORREST CY AR
2011-11-16 870-752-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRINKLEY AR
2011-11-15 870-667-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ASHDOWN AR
2011-11-10 870-212-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PARAGOULD AR
2011-11-09 870-206-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2011-11-09 870-400-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2011-11-09 870-406-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 GURDON AR
2011-11-09 870-581-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORREST CY AR
2011-11-09 870-636-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2011-11-03 870-281-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BLYTHEVL AR
2011-11-01 870-340-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2011-11-01 870-340-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2011-11-01 870-340-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2011-11-01 870-340-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2011-11-01 870-340-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2011-10-28 870-571-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2011-10-27 870-228-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HELENA AR
2011-10-27 870-309-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EL DORADO AR
2011-10-27 870-309-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EL DORADO AR
2011-10-27 870-309-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL DORADO AR
2011-10-27 870-639-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL DORADO 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.