Some VPNs provide “malware protection filter” or a similar service. In practice, that means that they block access to networks that they consider “high risk”. Free hosting unfortunately has a reputation of being high risk, which leads to it being blocked.
I don’t know the technical details, but I’m pretty sure that it works exactly like that, and that the blocks are indeed temporary. But I also suspect that “temporary” here means more than a few minutes or hours.
Not really how that works I think.
Most VPN clients dynamically load balance across their service and may reconnect you to a different server in the same region, resulting in a different IP address for you. But the IP addresses of servers are fixed I think.
Either they have their own IP space which means that that’s the IP addresses they have. Or they get IP space from third party networks, but those typically aren’t too keen on letting one customer abuse their IP addresses and then just rotate them out to a different customer and give that customer fresh IP addresses to abuse.
VPNs are blocked at many services, especially if the VPN provider has a poor reputation.
Also, I don’t understand where you get the notion from that there is “marketing hype” that we support VPNs. We do very little marketing in general and don’t encourage the use of VPNs for anything other than troubleshooting or bypassing ISP-managed network blocks.
All in all, we have a system designed to detect abuse from incoming IP addresses and block the IP address or IP range where the abuse is coming from. This is a necessary precaution to protect our network against attacks (it really is, it’s not hypothetical, this measure was implemented after a series of attacks and was the main reason we could stop those attacks).
Since we can only block based on IP address and not on devices or users, this can cause problems for legitimate visitors, especially if those visitors are on an IP address that’s also used by many other people. Which is often the case with VPN services. Especially so if someone else on the IP address is doing something nasty, which is also common with VPN services.
VPNs are frowned upon by many companies, with some services outright blocking your access simply because you are using a VPN. We don’t discriminate against VPNs. We just block IP addresses where we see suspicious behavior coming form, which can be the IP address from a VPN or from something else.
