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
2013-05-23 870-551-1XXX 1000–1999Assigned METROPCS, INC. 5562 W MEMPHIS AR
2013-05-09 870-401-5XXX 5000–5999Assigned WINDSTREAM COMMUNICATIONS, INC. - AR 7656 PINE BLUFF AR
2013-04-08 870-206-6XXX 6000–6999Assigned WINDSTREAM COMMUNICATIONS, INC. - AR 7656 JONESBORO AR
2013-03-28 870-559-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARION AR
2013-02-20 870-552-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARLISLE AR
2013-02-11 870-527-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BRINKLEY AR
2013-02-08 870-201-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C NEWPORT AR
2013-02-08 870-300-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C DERMOTT AR
2013-01-23 870-748-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CALION AR
2013-01-17 870-949-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAGNOLIA AR
2012-12-20 870-200-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NASHVILLE AR
2012-12-13 870-594-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2012-11-08 870-271-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C HARRISBURG AR
2012-11-08 870-639-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C EL DORADO AR
2012-10-15 870-345-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARKADLPHIA AR
2012-10-05 870-759-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C WALNUT RDG AR
2012-09-18 870-302-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2012-08-16 870-738-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JONESBORO AR
2012-08-01 870-594-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2012-07-30 870-576-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C OSCEOLA AR
2012-06-18 870-571-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2012-06-18 870-828-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 GLENWOOD AR
2012-05-10 870-826-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOPE AR
2012-04-30 870-495-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NEWPORT AR
2012-04-12 870-206-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2012-04-12 870-206-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2012-03-29 870-280-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2012-03-29 870-677-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL DORADO AR
2012-03-19 870-301-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUGUSTA AR
2012-03-14 870-206-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2012-03-09 870-466-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C WARREN AR
2012-03-08 870-212-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PARAGOULD AR
2012-03-07 870-330-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 TEXARKANA AR
2012-03-02 870-394-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C W MEMPHIS AR
2012-02-29 870-594-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2012-02-22 870-945-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2012-02-16 870-362-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WYNNE AR
2012-02-16 870-498-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CAMDEN AR
2012-02-02 870-412-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MONTICELLO AR
2012-02-02 870-551-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 W MEMPHIS AR
2012-01-27 870-505-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BERRYVILLE AR
2012-01-26 870-662-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MARIANNA AR
2012-01-26 870-831-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HAMBURG AR
2012-01-13 870-281-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BLYTHEVL AR
2012-01-13 870-292-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HOPE AR
2012-01-05 870-206-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
2012-01-05 870-227-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 TRUMANN AR
2012-01-05 870-384-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CAVE CITY AR
2012-01-04 870-460-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C MONTICELLO AR
2012-01-04 870-466-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WARREN 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.