NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 870-873

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 870-873 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 870 blocks

Most active assignees, all time — NPA 870
BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 3
NEW CINGULAR WIRELESS PCS, LLC - IL 2
2
LEVEL 3 COMMUNICATIONS, LLC - AR 1
E. RITTER COMMS DBA RITTER COMMUNICATIONS, INC. AR 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
— 870-873-0XXX 0000–0999Reserved BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 HUMPHREY AR
— 870-873-1XXX 1000–1999Reserved BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 HUMPHREY AR
— 870-873-2XXX 2000–2999Available HUMPHREY AR
2014-12-08 870-873-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HUMPHREY AR
— 870-873-4XXX 4000–4999Reserved BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 HUMPHREY AR
2022-12-21 870-873-5XXX 5000–5999Assigned E. RITTER COMMS DBA RITTER COMMUNICATIONS, INC. AR 095A HUMPHREY AR
2020-10-09 870-873-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMPHREY AR
2020-10-09 870-873-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMPHREY AR
— 870-873-8XXX 8000–8999Available HUMPHREY AR
2023-09-13 870-873-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F HUMPHREY 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.