1lookup

A practical workflow

1. API calls cascade through five layers: validity, carrier and porting history, line type, DNC status, and fraud score.
2. Real-time phone validation includes instant verification of number validity, line status, and carrier information with sub-300ms response time.
3. Fraud detection uses over 50 risk indicators including SIM swap detection, velocity monitoring, and pattern analysis to generate a fraud score.

Based on the sources below. Editorial review does not imply hands-on product testing.

Candidates based on category and primary feature. Check feature and pricing differences before switching.

What changed

Changes to the facts recorded here, not a live scan of every vendor update. Save this tool to follow updates in your account.

1. 9/13/2026

   Updated: export formats, features, integrations, sources, summary, use cases, walkthrough

   See recorded changes

   exportFormats

   Before: []

   After: ["API responses provide JSON formatted data for all lookups and enrichments."]

   features

   Before: ["Real-time phone validation with carrier data, fraud scoring, and Do Not Call (DNC) compliance."]

   After: ["Real-time phone validation with carrier data, fraud scoring, and DNC compliance."]

   integrations

   Before: []

   After: ["Integrates with existing tools and platforms via API with dashboard and analytics support."]

   sources

   Before: [{"url":"https://www.1lookup.io/","label":"1Lookup - Phone, Email, IP & Social Data APIs for AI Agents"},{"url":"https://www.1lookup.io/products/phone-validation","label":"Phone Validation API - Real-time Verification | 1Lookup"}]

   After: [{"url":"https://www.1lookup.io/","label":"1Lookup - Phone, Email, IP & Social Data APIs for AI Agents"},{"url":"https://www.1lookup.io/products","label":"Complete Data Validation Suite | 1Lookup"},{"url":"https://www.1lookup.io/products/phone-validation","label":"Phone Validation API - Real-time Verification | 1Lookup"}]

   summary

   Before: "1Lookup is a data validation and enrichment platform offering 43 products accessible via a single API. It provides real-time validation and enrichment for phone numbers, emails, IP addresses, and domains with sub-300ms response times and daily data updates."

   After: "1Lookup provides a unified API offering 43 data products for phone, email, IP, social, and SEO data validation and enrichment. It delivers real-time validation and intelligence with sub-300ms response times and uses a universal credit system for billing across all products."

   useCases

   Before: ["Reduce SMS bounce rates and improve campaign ROI by validating phone numbers before sending messages.","Verify customer phone numbers during registration to prevent fraud, reduce fake accounts, and enhance security."]

   After: ["Reduce SMS bounce rates and improve campaign ROI by validating phone numbers before sending, ensuring TCPA compliance and maintaining sender reputation.","Verify customer phone numbers during registration to prevent fraud, reduce fake account creation, and enhance security."]

   walkthrough

   Before: ["API call cascades through five layers: validity, carrier and porting history, line type, DNC status, and fraud score."]

   After: ["API calls cascade through five layers: validity, carrier and porting history, line type, DNC status, and fraud score.","Real-time phone validation includes instant verification of number validity, line status, and carrier information with sub-300ms response time.","Fraud detection uses over 50 risk indicators including SIM swap detection, velocity monitoring, and pattern analysis to generate a fraud score."]