You may look up our IP addresses in the public record: You can look up our IP ranges using our AS number, AS196752.
You can view our ranges, for instance, here: https://ipinfo.io/AS196752. Our uplinks at the moment are TATA communications and Telia, but we reserve the right to switch them in the future for obvious reasons.
There are no ports blocked on our end, and we have servers in both Amsterdam and Haarlem.
Only port 25 will be restricted for the first four hours after the VPS is created.
When ordering a VPS, keep in mind that your issued IP is random selected based on the datacenter you choice.