Free IPv6 Checker

Checks whether your domain's root resolves over IPv6 (an AAAA record) — not required for email deliverability today, but IPv6-only networks are a growing share of the internet. Plus SPF, DKIM, DMARC, and blacklist status in the same free check.

Your domain — the website address, not an email address (gmail.com, outlook.com, etc. are already set up correctly)

We only read public DNS — never your inbox. Nothing is stored unless you explicitly ask us to email you a copy.

TipSending marketing or transactional email from a subdomain, like mail.yourdomain.com or news.yourdomain.com? Check that separately — it needs its own SPF, DKIM, and DMARC, and a clean result above doesn't cover it.

An IPv6 address comes from whoever hosts your domain — we can check for one, but can't generate it for you. Ask your hosting provider to add IPv6 support, then an AAAA record pointing to it.