NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 989-365

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026

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

The ten 1,000-number thousand-blocks inside prefix 989-365 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 989 blocks

Most active assignees, all time — NPA 989
FRONTIER NORTH, INC. - MI 4
TON80 COMMUNICATIONS, LLC 1
ONVOY, LLCV - MI 1
NEW CINGULAR WIRELESS PCS, LLC - IL 1
DAYSTARR LLC DBA DAYSTARR COMMUNICATIONS 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
2005-08-05 989-365-0XXX 0000–0999Assigned 123.NET, LLC 2550 SIX LAKES MI
2017-04-27 989-365-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C SIX LAKES MI
2009-08-27 989-365-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIX LAKES MI
— 989-365-3XXX 3000–3999Reserved FRONTIER NORTH, INC. - MI 0695 SIX LAKES MI
— 989-365-4XXX 4000–4999Reserved FRONTIER NORTH, INC. - MI 0695 SIX LAKES MI
2014-06-13 989-365-5XXX 5000–5999Assigned DAYSTARR LLC DBA DAYSTARR COMMUNICATIONS 993L SIX LAKES MI
2017-04-26 989-365-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SIX LAKES MI
— 989-365-7XXX 7000–7999Reserved FRONTIER NORTH, INC. - MI 0695 SIX LAKES MI
2022-03-04 989-365-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J SIX LAKES MI
— 989-365-9XXX 9000–9999Reserved FRONTIER NORTH, INC. - MI 0695 SIX LAKES MI

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.