Need Dedicated Server With IPv6 Subnet Allocation

Looking for providers offering /48 or at least /56 IPv6 allocations.
Server specs: any 6+ core CPU, NVMe, 32 GB RAM minimum. Must allow custom OS image upload.
Reasonable setup time appreciated. Can I rely on HostingSource or GTHost dedicated hosting services? What host is better?

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Appreciate the ability to host region-specific services using the extensive global server network. GTHost.com instant servers can be trusted. What impresses me most is the consistent uptime, as my websites remain accessible 24/7 without unexpected interruptions that could negatively impact visitors or sales.