Enter the handle
Type the username into the console. Command One selects every module that can act on a handle and shows the credit cost before you launch.
username module
Reverse username lookup across 150+ platforms
People reuse handles. A reverse username lookup turns that habit into a map: give Command One one username and it probes 150+ public platforms natively, then dispatches Sherlock, Maigret, Snoop, Blackbird, socialscan and WhatsMyName to your worker fleet — merging every hit into a single, confidence-scored case file with the source behind each result.
public sources only · free registration
how the sweep runs
One handle in, a mapped footprint out
Sweep in parallel
Native probes fire immediately while heavier tools queue to the worker fleet. Results stream into the case file as each source answers.
Correlate the hits
Matching accounts, names and contact surfaces merge into unified entities grouped into Socials, Communication, Confirmed Identity, Domains and Breaches.
Verify and report
Open the Verify Link Pack for manual confirmation, then export the case as CSV or a branded PDF with the source behind every claim.
engines behind it
Six username engines, one findings schema
Every engine writes into the same normalised schema, so you compare platforms rather than output formats. Overlap is the point: agreement between independent tools is what lifts a lead to a corroborated finding.
Native prober
In-console HTTP probing across 150+ platforms with per-site response signatures, so a soft 404 or placeholder page is not counted as a hit.
Sherlock
The reference username hunter. Broad, fast platform coverage with well-maintained detection rules, dispatched to your worker fleet.
Maigret
Deep profile collection — it does not just confirm existence, it pulls bios, IDs, links and metadata that seed further pivots.
Snoop
Large source catalogue with strong coverage of forums, boards and regional platforms that Western-centric lists miss.
Blackbird & socialscan
Fast existence checks for handles and email-derived handles, useful as a second opinion against false positives.
WhatsMyName
The community-maintained detection dataset, giving a transparent, auditable rule per platform.
Confidence, not guesswork
Identical entities found by different modules merge and gain confidence; a lone hit stays a lead. Filter the feed to corroborated results only, or by confidence band, to separate what you can report from what you still need to check.
Manual verification built in
The Verify Link Pack generates ready-made lookup links — platform profiles, search dorks, Wayback snapshots, WHOIS and company registers — so you can confirm a hit by hand before it reaches a report.
questions
Reverse username lookup FAQ
What is a reverse username lookup?
A reverse username lookup takes a single handle and checks where else that same handle exists across social, forum, gaming, developer and marketplace platforms. Instead of searching for a person by name, you pivot from the identifier they reuse.
How many platforms does Command One check?
The native prober checks 150+ public platforms directly. Adding the worker-fleet modules — Sherlock, Maigret, Snoop, Blackbird, socialscan and WhatsMyName — pushes coverage into the thousands of sources those projects maintain.
Does a hit prove the accounts belong to the same person?
No. A hit means the handle exists on that platform. Command One scores confidence by corroboration: when independent modules agree on the same entity, the record merges and its confidence rises. Single-source hits stay flagged as leads to verify manually.
Is a reverse username search legal?
Command One queries openly accessible sources only — nothing behind a login or paywall, no breach dumps and no data brokers. Use it for lawful due diligence, fraud and trust-and-safety work, journalism or auditing your own exposure.
Is it free?
Registration is free and every account gets a daily credit allowance for sweeps. Heavier open-source modules run on a worker fleet you can self-host, and premium API modules are priced per search.
Sweep your first handle in minutes
Create a free account, enter a username and watch the grid light up. Lawful research and due-diligence use only.