Tools
IPv6 Support Test
Find out in seconds whether a site has IPv6 support: the AAAA records of the domain and its www form are checked and presented as a clear report card. Free, no sign-up.
Enter a domain and press "Check"; the report appears here.
IPv6: The Internet's New Address Space
Every device on the internet has an IP address, and the old system, IPv4, ran out of its ~4.3 billion addresses long ago. IPv6 is the fix: 340 undecillion addresses, and carriers — mobile networks especially — have been moving traffic to IPv6 fast for years. In many countries a large share of mobile users now reach the internet over IPv6.
If your site is IPv4-only, those visitors reach you indirectly through the carrier's translation layers (NAT64 etc.); that works, but adds a little latency and one more moving part. Enabling IPv6 by adding an AAAA record takes minutes on most modern hosting: get your server's IPv6 address and add it to DNS as AAAA. Google has crawled IPv6 flawlessly for years; correctly configured IPv6 does not hurt SEO — it is future-proofing and a professionalism signal. This tool checks the AAAA records of both your root domain and its www form and shows exactly what is missing.
Technical infrastructure wins where nobody looks.
IPv6, HTTP/2, speed, security headers… Let's harden the layer users never see but Google always does.