The free IPv6 compatibility checker tests whether any website supports IPv6 — an AAAA DNS lookup plus a live connection test through a real IPv6 proxy network, so you know if IPv6 proxies will work before you buy.
We resolve the domain's AAAA records and then actually connect over IPv6 through our proxy network, confirming real end-to-end reachability rather than just DNS presence.
IPv6 proxies are far cheaper and harder to exhaust, but only work on IPv6-ready targets. This tool tells you instantly whether a site qualifies.