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
2006-12-07 870-562-2XXX 2000–2999Assigned CSC VOICE, LLC 612K MAGNOLIA AR
2006-12-07 870-569-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G BATESVILLE AR
2006-12-07 870-624-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G TUCKERMAN AR
2006-12-07 870-639-3XXX 3000–3999Assigned CSC VOICE, LLC 612K EL DORADO AR
2006-11-22 870-330-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 TEXARKANA AR
2006-11-15 870-283-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CAVE CITY AR
2006-11-15 870-484-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHERIDAN AR
2006-11-15 870-821-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARIANNA AR
2006-10-31 870-416-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2006-10-31 870-416-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2006-10-31 870-995-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HELENA AR
2006-10-24 870-395-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C PINE BLUFF AR
2006-10-20 870-292-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HOPE AR
2006-10-13 870-484-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SHERIDAN AR
2006-10-09 870-416-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2006-09-05 870-495-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 NEWPORT AR
2006-09-05 870-614-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 LUXORA AR
2006-08-31 870-225-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 W MEMPHIS AR
2006-08-28 870-637-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WALNUT RDG AR
2006-08-28 870-726-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 GREEN FOR AR
2006-08-25 870-493-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DELL AR
2006-08-25 870-525-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 CHERRY VLY AR
2006-08-25 870-527-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BRINKLEY AR
2006-08-25 870-825-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 DIERKS AR
2006-08-21 870-394-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 W MEMPHIS AR
2006-08-17 870-275-6XXX 6000–6999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2006-08-17 870-275-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2006-08-17 870-637-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G WALNUT RDG AR
2006-08-11 870-224-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONTICELLO AR
2006-08-08 870-394-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 W MEMPHIS AR
2006-08-08 870-416-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HARRISON AR
2006-07-21 870-275-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2006-07-21 870-275-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2006-07-21 870-275-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
2006-07-21 870-659-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STUTTGART AR
2006-07-14 870-394-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J W MEMPHIS AR
2006-07-14 870-559-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MARION AR
2006-06-30 870-586-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PARAGOULD AR
2006-06-16 870-519-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2006-06-12 870-267-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2006-06-12 870-267-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2006-06-12 870-267-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2006-06-12 870-637-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WALNUT RDG AR
2006-06-05 870-665-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL DORADO AR
2006-05-22 870-416-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2006-05-22 870-688-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2006-05-18 870-819-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 JONESBORO AR
2006-05-17 870-416-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2006-05-11 870-776-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLYTHEVL AR
2006-03-28 870-270-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORREST CY 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.