What tools do gambling or classifieds sites use to detect or know your using a vpn?
Thanks in advance.
Although some people on the forum and even on the internet answer your question, the fact is that casinos or betting houses will not tell you how they detect VPNs. This is a security procedure that they use and that is confidential so that people do not circumvent the restrictions that the casino imposes. Therefore, the only way for you to get a more detailed answer would be if you could ask someone who has worked in the security area of an online casino. But I also doubt that this person would be so unethical as to reveal confidential information. But since unfortunately nowadays people will do anything for money, I would not be surprised if this person charged you money. I do not know anyone who works in a casino and even if I did, I definitely would not tell you. Because I think that this type of information should not be public and should remain only with the employees and casino owners.
Who is doing the assigning of the dynamic ip address, the isp or the router? Because one article I read elsewhere said the ISP, the other said the home router. Can a home router also moonlight as a DHCP (Dynamic Host Configuration Protocol)?
As far as I know, the ISP typically assigns the dynamic IP address, not the home router. Your ISP controls the pool of IP addresses, and when your device connects to the internet, the ISP assigns an IP from that pool. The home router does manage internal IPs for your local network using DHCP, but this is separate from the public IP assigned by the ISP. So, while your router does handle internal IP assignment, it's the ISP that determines your public-facing IP.
You can have your own router IP address pool that is different from the ISP's pool—that's the normal setup. However, you can ask the ISP to bridge your device so you can use the IP address they provide. Going back to OP's concern, if you have a dynamic IP, your IP will change from time to time, but if you have a static IP, that will be permanent and recorded by the casino. However, since casinos are not overly concerned with our IP address, we just need to be mindful of our location if we want our account to remain secure, and avoid changing from one country to another every time we access the casino.
I don't like using my country's mobile internet provider to access casinos because the IP is constantly changing, although they are still always IPs from my country, but they change cities. That's why I prefer to use my fixed internet provider so I don't have problems with casinos, especially because I do KYC at the casino.