IPv6 Readiness Checker
Check root www and mail host AAAA records for IPv6 readiness.
Checks whether the domain (and its www + mail servers) publish IPv6 (AAAA) records — a signal of IPv6 readiness. Queried live over Cloudflare DNS-over-HTTPS.
About this tool
IPv6 Readiness Checker is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: Developer Tools — Advanced. Browse more Developer Tools — Advanced tools.