Welcome Israel Marte,
I understand how frustrating it can be when you would like to know whether the Windows XP activation website still exists.
Since Windows XP has been EOS (End of Support) since April 8, 2014, some activation services have changed over time.
You can find more information in these links below:
- How to activate Windows XP after exchange hardware - Microsoft Q&A
- Future Windows XP activation support - Microsoft Q&A
Besides, could you please confirm:
- Are you trying to activate an existing Windows XP installation, or are you planning to reinstall Windows XP?
- When you attempt activation, do you see an option for Internet activation, and if so, what error message do you receive?
I look forward to your reply so we can continue working together to address the issue.