Check if a Bitly username is taken

What we check on Bitly

Instant tier for username lookups - answered in well under a second

Bitly is checked from a username. The response says whether that handle exists on Bitly - registered: true or registered: false - with the moment that was established in checkedAt. An email address on its own cannot reach Bitly; if you only have an email, its local part is tried as a handle and any hit is labelled as derived, never counted as a confirmed match.

Bitly 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 Bitly 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 Bitly 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 Bitly accepts

• Username: send the handle as query. Bitly is checked for that exact handle - useful when a person reuses the same name across platforms.

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 '{"query": "someuser"}'

What a Bitly result looks like

{
  "platform": "bitly",
  "registered": true,
  "checkedAt": "2026-10-15T09:53:15.933Z",
  "identity": "username"
}

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 Bitly.

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

Bitly lookup FAQ

Can I check a phone number on Bitly?

Not directly. Bitly can be reached from username. Phone numbers are checked on the messaging and social apps that sign people up by phone.

How fast is a Bitly check?

Fast: Bitly 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.

What happens if Bitly blocks the check?

Bitly 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 Bitly 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.