Check if an email is registered on Internet Archive

What we check on Internet Archive

Instant tier for email address lookups - answered in well under a second

Internet Archive is checked from an email address. The response says whether that address has a Internet Archive account - registered: true or registered: false - with the moment that was established in checkedAt. A username on its own cannot reach Internet Archive, so username lookups do not include it.

Internet Archive is in the instant tier: with ?instant=true it is among the first platforms answered, in well under a second. On a full lookup it is checked alongside every other platform and streamed as it lands.

If Internet Archive blocks the check, times out, or answers ambiguously, it is omitted from results[] entirely rather than returned as registered: false. Absence from the response means "unconfirmed", never "no account".

Who checks Internet Archive accounts

Identity providers, link-in-bio pages and everyday utilities are checked because almost everyone has an account on at least one of them. An email with no presence even here is unusual, which makes these platforms a useful baseline in any footprint.

More on this: Email fraud detection.

Inputs Internet Archive accepts

• Email address: send it as email. Internet Archive is checked from the address itself, the most common way teams look up an account at signup.

One request

curl -X POST "https://api.digifootprint.dev/v2/lookup?wait=true" \
  -H "Authorization: Bearer dfp_your_key" \
  -H "Content-Type: application/json" \
  -d '{"email": "someone@example.com"}'

What a Internet Archive result looks like

{
  "platform": "archiveorg",
  "registered": true,
  "checkedAt": "2026-10-15T09:53:16.267Z",
  "identity": "email"
}

The full response shape - breaches, web mentions, matches versus socialMatches, and what method means - is in running a lookup.

Related platforms

Every one of these is checked in the same request as Internet Archive.

More accounts & identity platforms: About.me, Instructables, Ameblo, Huggingface, Pypi, Douban · all accounts & identity

Internet Archive lookup FAQ

Can I check a phone number on Internet Archive?

Not directly. Internet Archive can be reached from email address only. Phone numbers are checked on the messaging and social apps that sign people up by phone.

How fast is a Internet Archive check?

Fast: Internet Archive is in the instant tier, so with ?instant=true it is answered in well under a second. A full lookup streams it as soon as it lands.

Is this an Internet Archive email checker?

It checks whether an email address is registered on Internet Archive, which is the question most people mean by an email checker. It is not a password or credential checker, and not a deliverability test - it never signs in, never sends mail, and returns only whether an Internet Archive account exists for the address, with the time that was established.

What happens if Internet Archive blocks the check?

Internet Archive is left out of the response. We never report a platform we could not confirm as "not registered" - a missing platform means unconfirmed, not absent.

Does the API return the Internet Archive account details?

No. You get whether an account exists for the input you sent, and when that was established. No profile contents, photos, followers or private data are collected or returned.