You're missing
1 in 3 of your buyers.
We index the open web, not LinkedIn — 2 in 3 of our contacts exist
on no other platform. That's a whole layer of your market you've never seen.
Your first 50 contacts are free.
Keep your stack.
Search only what it's missing.
No need to switch tools. Upload the domains you already have contacts for, exclude them, and every Datasigma search returns only net-new contacts.
Upload your covered domains
Export from Apollo, ZoomInfo, your CRM — anywhere. Drop the CSV in once.
We exclude them from every search
Your covered accounts are filtered out automatically — no manual dedupe, ever.
Every result is net-new
What's left is pure whitespace — contacts your stack has never seen, source attached.
Data your stack has never seen.
Proof for every record.
Upload the list others couldn't match
Export your unmatched domains from any platform and drop them here. See how many we cover before you spend a credit.
Every contact comes with a receipt
No black box. Every record links to the exact public page where we found it — click the source and check it yourself.
Managing Director · Musterfenster GmbH Verified
Owners, founders and directors running real businesses — they're just not on the network every other vendor draws from. Keep your current stack; run Datasigma alongside it for the market it can't see.
Built for people selling where LinkedIn can't see
SMB & local-business sellers
Owners and founders who never made a LinkedIn profile — real businesses, off the grid every other vendor draws from.
Agencies & outsourced sales teams
Deliver coverage your client's competitors can't buy. Exclusive data is a deliverable, not a commodity.
RevOps & enrichment
Waterfall us after your primary vendor. We match the domains that came back empty.
Founder-led outbound
A small list of untouched contacts beats a big list of exhausted ones.
How we built a list no one else has
From public web sources to your pipeline, in three steps.
Index billions of pages a month
We continuously index publicly accessible web sources — company websites, business registries, public directories, and regulatory filings. We respect robots directives and publisher access controls.
AI reads every page
Our models read each page the way a person would — identifying names, roles, business emails, and direct dials that simple pattern-matching extractors miss.
Verified before it's in
Every contact is validated and linked to its source page before it enters the index. No recycled lists, no purchased databases.
Questions, answered
Where does the data come from?
Publicly accessible web sources: company websites, business registries, public directories, and regulatory filings. We index these sources ourselves, extract contact details with our own AI models, validate them, and attach the source URL to every record. Nothing is purchased, resold from another vendor, or taken from LinkedIn.
How is this different from Apollo or ZoomInfo?
Those platforms largely share one upstream: LinkedIn-derived data. Our index is built independently, so about 64% of our contacts appear on no other prospecting platform. We work well alongside them — we cover what they miss.
How accurate are the emails?
Every email is verified before it enters the index, and you can re-verify at export. Where a contact can't be verified, we say so instead of selling it anyway.
What does "source URL" mean?
Every contact links to the public page where we found it. Click it and see for yourself — no black box.
Can I upload domains other tools couldn't match?
Yes — that's the coverage check. Upload your unmatched list and we'll show you how many we cover before you spend a credit.
Is this compliant with privacy laws like GDPR?
We hold business contact data only — names, roles, business emails, and business phone numbers indexed from publicly accessible sources. We do not hold consumer, financial, or special-category data. For B2B business-contact data we rely on legitimate interest as our lawful basis under the GDPR, we provide the notice required by Article 14, and every record carries the URL of the public page it came from. Opt-out and erasure requests are honoured and processed within 30 days via our Privacy Center. Full details are in our privacy policy.
Start prospecting where
no one else is looking.
Free credits to start · No credit card required