NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 574-249

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 574-249 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 574 blocks

Most active assignees, all time — NPA 574
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6
TELEPORT COMMUNICATIONS AMERICA, LLC - IN 1
ONVOY, LLC - IN 1
NEW CINGULAR WIRELESS PCS, LLC - IL 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 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
— 574-249-0XXX 0000–0999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 KNOX IN
— 574-249-1XXX 1000–1999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 KNOX IN
— 574-249-2XXX 2000–2999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 KNOX IN
2010-03-04 574-249-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 KNOX IN
2021-10-19 574-249-4XXX 4000–4999Assigned ONVOY, LLC - IN 097D KNOX IN
2010-06-22 574-249-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KNOX IN
2017-10-04 574-249-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 KNOX IN
2017-12-12 574-249-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 KNOX IN
— 574-249-8XXX 8000–8999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 KNOX IN
— 574-249-9XXX 9000–9999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 KNOX IN

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.