.dev Domain Age Checker
.dev is operated by Google Registry and comes with an unusual technical guarantee: the entire TLD is HSTS-preloaded, meaning every .dev domain is required to load over HTTPS in supporting browsers — there's no way to serve a .dev site over plain HTTP. It's popular for developer portfolios, documentation sites, and internal tooling.
RDAP support for .dev is solid, consistent with Google's other gTLDs, so creation and expiry dates are reliably available. Because the TLD is younger and skews toward individual developers rather than registered businesses, don't expect the kind of multi-decade history you'd see on a .com — a .dev domain registered a few years ago with consistent content is already on the older side for this TLD.
If you're assessing a .dev domain for a backlink audit, treat its age relative to other .dev sites, not relative to legacy gTLDs — the whole namespace is comparatively young.