IPv6-adapter.com respect privacy and no data is stored for more than 24 hours. The only personal data collected are the IPs addresses that are required for this website to work.
To use IPv6-adapter.com, simply add the following code in the head of your page:
<script src="https://ipv6-adapter.com/api/v1/api.js" async defer></script>.
Then when you need to use a user's ip simply make a request to
https://ipv6-adapter.com/api/v1/fetch?ip=USER_IP and use the
ips field of the JSON response.