NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 563-200

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 563-200 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 563 blocks

Most active assignees, all time — NPA 563
METROPCS, INC. 3
ONVOY, LLC - IA 2
MCC TELEPHONY OF IOWA, LLC - IA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 2
ONVOY SPECTRUM, 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
2017-08-14 563-200-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H DAVENPORT IA
2018-02-20 563-200-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DAVENPORT IA
2018-03-27 563-200-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DAVENPORT IA
2018-03-27 563-200-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DAVENPORT IA
2018-06-06 563-200-4XXX 4000–4999Assigned METROPCS, INC. 5562 DAVENPORT IA
2019-05-24 563-200-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F DAVENPORT IA
2018-06-06 563-200-6XXX 6000–6999Assigned METROPCS, INC. 5562 DAVENPORT IA
2019-05-24 563-200-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F DAVENPORT IA
2019-12-27 563-200-8XXX 8000–8999Assigned METROPCS, INC. 5562 DAVENPORT IA
2018-10-19 563-200-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DAVENPORT IA

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.