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
2011-01-05 870-665-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL DORADO AR
2010-12-22 870-724-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C GURDON AR
2010-12-10 870-494-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-12-10 870-494-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-11-29 870-936-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-3XXX 3000–3999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-4XXX 4000–4999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-5XXX 5000–5999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-6XXX 6000–6999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-8XXX 8000–8999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-9XXX 9000–9999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-18 870-519-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORREST CY AR
2010-11-18 870-519-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-11-18 870-519-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-11-18 870-519-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-11-18 870-519-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-11-05 870-330-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TEXARKANA AR
2010-11-04 870-277-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JONESBORO AR
2010-10-25 870-203-9XXX 9000–9999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2010-10-21 870-754-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2010-10-20 870-501-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 MCGEHEE AR
2010-10-15 870-494-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORREST CY AR
2010-10-14 870-877-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARKANSASCY AR
2010-10-04 870-204-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HARRISON AR
2010-07-27 870-754-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2010-07-09 870-824-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BLYTHEVL AR
2010-07-08 870-345-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 ARKADLPHIA AR
2010-06-25 870-390-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 CAMDEN AR
2010-06-25 870-626-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 MAGNOLIA AR
2010-05-13 870-565-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARAGOULD AR
2010-04-26 870-824-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BLYTHEVL AR
2010-03-08 870-394-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2010-03-08 870-394-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2010-02-26 870-754-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2010-02-26 870-754-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2010-02-18 870-635-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2010-02-10 870-639-1XXX 1000–1999Assigned CSC VOICE, LLC 612K EL DORADO AR
2010-01-28 870-635-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2010-01-19 870-939-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C PINE BLUFF AR
2010-01-07 870-660-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES ARC AR
2009-12-23 870-635-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2009-12-09 870-454-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C CAMDEN AR
2009-12-09 870-617-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ARKADLPHIA AR
2009-12-07 870-330-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TEXARKANA AR
2009-12-07 870-754-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2009-12-07 870-754-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2009-11-23 870-608-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEARDEN 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.