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Im sure for totally legitimate reasons....
Closest you'll probably get is one of the major cloud providers, starting and then destroy/recreate a vps when you need to change your IP.
It will be not working, because after you will destroy VPS and recreate you will get the same IP address.
We provide servers across 78 datacenters. You can easily change your IP address.
https://caasify.com/cloud-vps/
Just create a new VPS and delete the old one afterwards.
How to switch IP?
@antonpa
You can delete your current VPS and order a new one. However, you need to keep the existing VPS until you have placed the new order, and then you can remove the previous one.
With most sane providers it will work.. once, maybe twice. Then you will most likely will need to create 3 VPSes to have 1 new IP and delete 2. Then 4 and delete 3. Then... you will be flagged/blocked/hit a VPS limit :-D
I mean, it depends how often you need a new IP.
OP said "switching speed does not need to be too fast", what ever that really means.
Every couple days you will definitely be fine. I don't think most providers will reserve the IP for you for too long.
If you need a new one every couple hours, it will be an issue.
But you probably do something wrong in the first place if your server needs a new IP every hour
For most providers here, yeah sure. When I say major cloud provider I'm talking Vultr/AWS/ect.
Huge pool of IP'S and pretty confident they dont "hold" and IP for you
I will translate:
Instant is okey.
5 minutes is okey.
1 hour is not okey.
:-D
But maybe if you deploy this using multiple hourly providers you could balance it between all of those and abuse the system!
Hey @OP I have a great idea you can use!
The only semi-legitimate reason I can think of why someone wants this (other than the typical suspects of email spam, etc.) is if they are a prime target for DDOS attacks and want to roll IPs every time they get attacked (rather than pay for anti-DDOS protection). Dynamic IPs on residential connections can prove handy if a script kiddie finds your home IP and starts DDOSing you offline, in which case resetting your router after an hour fixes the problem (so long as they don't find your new IP). For a server however that seems like a stretch...