Can I check a phone number on Leetcode?

Not directly. Leetcode can be reached from username. Phone lookups are in beta and cover a small set of platforms.

How fast is a Leetcode check?

Leetcode is checked on a full lookup, which streams results as they land - the first matches arrive in around 60 milliseconds and the whole set typically completes in a few seconds.

What happens if Leetcode blocks the check?

Leetcode 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 Leetcode 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.

Check if a Leetcode username is taken

Digital Footprint checks Leetcode from an username as part of every lookup, alongside 887+ other platforms, breach history and public web mentions - one request, one shape of answer. A hit means an account exists for that input; account contents are never collected.

Accepts: username
Speed: Standard tier
Popularity: #3,060 by global traffic
Category: Accounts & identity

What we check on Leetcode

Standard tier - checked on every full lookup

Leetcode is checked from a username. The response says whether that handle exists on Leetcode - registered: true or registered: false - with the moment that was established in checkedAt. An email address on its own cannot reach Leetcode; 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.

Leetcode is checked on every full lookup (?wait=true or streaming), alongside every other platform. It is not in the sub-second instant subset, which is reserved for the highest-value platforms for each input type.

If Leetcode 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".

One request

POST /v1/lookup?wait=true

curl -X POST "https://api.digifootprint.dev/v1/lookup?wait=true" \
  -H "Authorization: Bearer dfp_your_key" \
  -H "Content-Type: application/json" \
  -d '{"query": "someuser"}'

What a Leetcode result looks like

From results[]

{
  "platform": "leetcode",
  "registered": true,
  "checkedAt": "2026-08-31T01:53:21.128Z"
}

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 Leetcode.

Google Whatsapp Microsoft Bitly Internet Archive Mozilla Adobe Udemy

Leetcode lookup FAQ

Can I check a phone number on Leetcode?: Not directly. Leetcode can be reached from username. Phone lookups are in beta and cover a small set of platforms.
How fast is a Leetcode check?: Leetcode is checked on a full lookup, which streams results as they land - the first matches arrive in around 60 milliseconds and the whole set typically completes in a few seconds.
What happens if Leetcode blocks the check?: Leetcode 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 Leetcode 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.

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