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
2014-10-28 870-571-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2014-10-28 870-648-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2014-10-28 870-941-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHERIDAN AR
2014-10-22 870-293-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F ARKADLPHIA AR
2014-10-03 870-228-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HELENA AR
2014-09-02 870-333-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2014-09-02 870-857-4XXX 4000–4999Assigned E. RITTER COMMUNICATIONS, LLC 128L CORNING AR
2014-08-28 870-232-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MT HOME AR
2014-08-28 870-333-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JONESBORO AR
2014-08-28 870-456-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STUTTGART AR
2014-08-20 870-206-8XXX 8000–8999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2014-08-20 870-525-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CHERRY VLY AR
2014-08-14 870-527-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BRINKLEY AR
2014-08-04 870-417-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LAKE VLG AR
2014-07-17 870-466-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARREN AR
2014-07-16 870-455-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F NASHVILLE AR
2014-07-16 870-667-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F ASHDOWN AR
2014-07-11 870-406-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GURDON AR
2014-06-25 870-639-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 EL DORADO AR
2014-06-06 870-232-0XXX 0000–0999Assigned YELCOT VIDEO GROUP, INC. - AR 398H MT HOME AR
2014-06-02 870-832-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HORATIO AR
2014-05-19 870-925-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MURFREESBO AR
2014-05-14 870-945-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORREST CY AR
2014-05-09 870-300-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DERMOTT AR
2014-05-01 870-229-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CROSSETT AR
2014-05-01 870-340-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JONESBORO AR
2014-04-30 870-648-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEXARKANA AR
2014-04-24 870-619-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 PINE BLUFF AR
2014-04-18 870-455-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F NASHVILLE AR
2014-04-11 870-230-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F ARKADLPHIA AR
2014-03-28 870-569-9XXX 9000–9999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G BATESVILLE AR
2014-03-19 870-376-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BATESVILLE AR
2014-03-14 870-810-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 POCAHONTAS AR
2014-03-10 870-495-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L NEWPORT AR
2014-03-07 870-281-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L BLYTHEVL AR
2014-03-07 870-333-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2014-03-07 870-408-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISBURG AR
2014-03-03 870-819-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 JONESBORO AR
2014-02-05 870-559-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARION AR
2014-01-23 870-667-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F ASHDOWN AR
2014-01-22 870-559-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MARION AR
2014-01-06 870-231-3XXX 3000–3999Assigned AIRECAST, LLC - AR 240H CAMDEN AR
2014-01-06 870-299-5XXX 5000–5999Assigned AIRECAST, LLC - AR 240H MAGNOLIA AR
2014-01-06 870-312-5XXX 5000–5999Assigned AIRECAST, LLC - AR 240H EL DORADO AR
2014-01-06 870-412-0XXX 0000–0999Assigned AIRECAST, LLC - AR 240H MONTICELLO AR
2014-01-02 870-494-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2014-01-02 870-494-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY AR
2013-12-30 870-201-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G NEWPORT AR
2013-12-30 870-202-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G POCAHONTAS AR
2013-12-30 870-228-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HELENA 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.