Verify every user and stop fraud before it starts
Verify
every user and
stop fraud
before it starts with Abstract API
One platform with unified email, phone and IP signals. Identify trustworthy users, block risky ones, and enrich your data. Protect your business and grow revenue.
The world’s best engineering teams run on Abstract API






Explore Abstract's
library of APIs
Email Validation API
Improve your delivery rate and clean your email lists with Abstract's industry-leading email verification API.
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Company Enrichment API
Enrich any domain or email with accurate company data, including headcount, location and industry.
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Phone Validation API
Improve your contact rate and clean your lists with Abstract's industry-leading phone number validation API.
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IP Geolocation API
Get the location of any IP with a world-class API serving city, region, country and lat/long data.
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IP Intelligence API
Spot VPNs, proxies, Tor and hosting IPs in real time, with ASN and location data on every lookup.
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See the full list of APIs

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Built for developers
by developers
Built for global coverage
A global architecture that ensures fast, reliable, and redundant service with industry-standard data sovereignty and privacy.

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Built for scale
Whether you have 10 or 10,000 requests per second, we’re ready for you.

Built for blazing speed
Milliseconds matter. We obsess about every single one of them in a response.
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Built for reliable uptime
Every minute of uptime counts. That’s why public companies, financial institutions, airlines, governments, and more trust us in production.

Get into production
this afternoon
Customer-obsessed technical support
Everything you need to get live and stay that way. Fast, responsive, and friendly support from developers. 24/7 via email, chat, and phone.
Integrate with your stack
Abstract integrates with the tools you already use, from cloud and analytics platforms to low code tools to ERPs, CRMs, and more.
World-class docs and SDKs
We obsess over “time to first production request”. That’s why we provide a ton of code samples, libraries, and SDKs to get you started quickly.
Ready for the enterprise
Compliance is at our core. We’re committed to industry-standard security and privacy frameworks, like SOC 2 and GDPR.
SOC 2
Type II
Type II
GPDR
Ready
Ready
99.99%
uptime SLA
uptime SLA
For more information check our
Enterprise ready
Abstract comes with security, compliance, and reliability built into the core. That’s why the Fortune 500, governments, and businesses in critical industries like financial services, healthcare, and airlines trust us.
Companies of all sizes build securely with Abstract
Calendly flags 30% of risky applicants before recruiters open a resume
A real-time risk score built on IP, phone, and email signals flags ineligible applicants before recruiters open a single resume, saving hours of review time every week.
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Default routes inbound leads in under 300ms with Abstract
Default verifies every email and geolocates every IP in under 300 milliseconds, routing each lead to the right rep across hundreds of territory segments.
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Prompt Cowboy cuts bounce rate by ~60% with Email Validation
With 100k+ users signing up every month, invalid addresses were tanking deliverability. Real-time validation at signup brought bounces back under control.
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Fillout turns real-time email validation into a paid Conversion Kit upgrade
Fillout built real-time email validation into its Conversion Kit, blocking invalid addresses at submission and turning the upgrade into a revenue line.
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Snov.io reclaims 2 hours a day per sales rep with Phone Validation
Sales reps were burning hours on VoIP lines, disposables, and dead numbers. Phone Validation, plugged into n8n, cleaned the list the same afternoon.
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Behind the scenes: a crypto trading platform repels a multi-day DDoS with Email Reputation
When thousands of fake signups hit at once, Email Reputation filtered the abuse in real time and kept legitimate users trading throughout the attack.
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API
key now
See why the best developers build on Abstract
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