NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 989-573

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 989-573 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6
PEERLESS NETWORK OF MICHIGAN, LLC - MI 1
CHARTER IP ENABLED SERVICES, LLC 1
CENTURYLINK COMMUNICATIONS, LLC 1
BANDWIDTH.COM CLEC, LLC - MI 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
— 989-573-0XXX 0000–0999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FREELAND MI
— 989-573-1XXX 1000–1999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FREELAND MI
— 989-573-2XXX 2000–2999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FREELAND MI
— 989-573-3XXX 3000–3999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FREELAND MI
— 989-573-4XXX 4000–4999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FREELAND MI
2011-12-01 989-573-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FREELAND MI
2014-04-09 989-573-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G FREELAND MI
2015-04-01 989-573-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FREELAND MI
2007-01-17 989-573-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FREELAND MI
— 989-573-9XXX 9000–9999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FREELAND MI

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.