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Bulk domain age checker

See when each domain was registered, how old it really is, and when the Internet Archive first saw it. When those dates disagree, the domain was dropped and re-registered — the one thing a plain age checker hides.

0 / 20 domainsURLs and subdomains are trimmed to the registrable domain.

How the domain age checker works

Every domain extension is run by a registry, and the registry keeps the authoritative record of when each name was registered. The checker asks that registry directly — through RDAP, the structured lookup that is replacing WHOIS, or through the registry’s WHOIS server where RDAP is not offered yet. The age you see is calculated from that date to today, in calendar years and months.

At the same time it asks the Internet Archive for the earliest capture of the domain. That second date is not a registration record; it is evidence of when a website actually existed there.

Two dates, and what it means when they disagree

A registration date resets when a domain expires and is registered again by someone else. So a domain marketed as aged can show a registration from last year — and the archive date is what gives that away.

Dates agreeFirst capture shortly after registration: one continuous registration, as far as the records show.
Archive is years olderThe name lapsed and was re-registered. Its history is real, but it did not stay with one owner.
No captures at allRegistered but never archived — usually a name that was held, not used.

Neither case is automatically bad. A re-registered domain can still be a good buy; it just is not the continuous, decade-old asset its age might suggest. That distinction matters most when you are paying a premium for age, which is where expired domains are most often oversold.

What domain age does and does not tell you

Age is the firmest number you can get about a domain, but it measures time, not quality. A name registered in 2011 that first carried real content in 2023 is, in practice, a three-year-old site. Read age alongside what the domain was used for. Our guide to what domain age actually tells you covers the sandbox question and where age misleads.

Which domains it can check

Most generic extensions (.com, .net, .org, .info, .app, .dev, .xyz and hundreds more) and many country extensions (.uk, .fr, .nl, .au, .ca, .in, .br) publish RDAP. For .io, .co, .me, .us, .it and .jp the checker falls back to WHOIS. A few registries limit what they publish: .de shows no creation date, and some registries refuse automated lookups altogether — when that happens the row says so instead of guessing.

Paste full URLs if that is what you have. The checker trims each line to the registrable domain, so https://blog.example.co.uk/page is checked as example.co.uk.

Frequently asked questions

Paste the domain into the checker and press Check. It asks the domain’s registry for the registration date, works out the exact age from it, and looks up the first time the Internet Archive captured the site. You can paste up to 20 domains, one per line, and download the results as a CSV.

From the registry that runs the extension, through RDAP, the structured successor to WHOIS. For extensions whose registry has no RDAP service yet, such as .io, .co, .me, .de and .us, the checker reads the registry’s WHOIS server instead. It never estimates a date.

Because the registration date resets when a domain expires and someone else registers it. If the Internet Archive captured the site years before the current registration began, the domain almost certainly lapsed and was re-registered. Its history is older than its current registration, but the backlinks and reputation from that history may not have survived the gap.

Not by itself. Age is a record of how long a name has been registered, not of what was done with it. What matters for a domain you plan to buy is its history: whether it hosted a real site, whether that site was spam, and whether it lapsed in between. Our guide to what domain age tells you covers the reasoning.

DENIC, the .de registry, does not publish creation dates. For those domains the first archive capture is the best evidence of age available, and the checker says so in the notes.

Yes. There is no sign-up. To respect the registries’ limits on automated lookups, each visitor can run about 200 lookups an hour, and results are cached for 24 hours.

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