Validate phone numbers globally with 99.6% accuracy. Choose pay-as-you-go credits or save up to 47% with monthly plans.
35% more credits β’ Predictable billing β’ Premium features
Perfect for small businesses
For growing companies
For established businesses
For high-volume operations
For large organizations with custom needs
Get custom pricing, dedicated infrastructure, and premium support for your enterprise needs
1 Credit = 1 API Request. Each time you call our phone validation API, 1 credit is deducted. You get complete phone data: validation status, carrier info, line type, country, and risk assessment. Simple, transparent pricing with no surprise charges.
Each API request returns: phone number validation, carrier detection, line type (mobile/landline/VoIP), country/location data, time zone, and risk score. All this data for just 1 credit per phone number.
Pay-as-you-go credits never expire. Monthly plan credits refresh each billing cycle.
Yes! Upgrade, downgrade, or cancel instantly. Changes take effect immediately. Credits carry forward if you downgrade.
Sign up β Get API key β Make first call. Professional service with instant setup.
We notify you at 80% usage. Service never stops - upgrade instantly or buy more credits. Transparent overage pricing.
Yes! Volume discounts available for 100K+ validations. Contact sales@phone-check.app for custom pricing.
Join 50,000+ developers using phone-check.app
From startups to Fortune 500 companies, businesses trust our phone validation service
βPhone-Check.app transformed our SMS marketing. We reduced SMS delivery failures from 12% to 1.8% in just one month. The real-time validation catches formatting errors instantly, and the VoIP number detection saved us from thousands of fake signups. ROI was positive within 2 weeks.β
Sarah Chen
Head of Marketing at GrowthScale
π’ SaaS Platform
βThe accuracy is incredible - 99.6% as advertised across 232 countries. We validate 2M+ phone numbers monthly for our e-commerce platform. Invalid registrations dropped from 15% to 0.8%. The format corrections alone recover 7% of phone numbers. Customer acquisition cost decreased by 23%.β
Michael Rodriguez
CTO at ShopifyPlus Store
π’ E-commerce
βVoIP number detection is a game-changer. We blocked 250,000+ VoIP numbers that were creating fake trial accounts. Fraud attempts dropped by 87%, saving us $40K monthly. The API is lightning fast - 35ms average response time never slows our signup flow.β
Jessica Williams
VP Engineering at SecureAuth
π’ Identity Platform
βIntegration took 5 minutes with their excellent documentation. The bulk validation processed our 500K phone number list in under an hour, identifying 18% invalid numbers we were paying to message. Switching from our previous provider saved us 65% while getting better accuracy.β
David Park
SMS Marketing Manager at ContentHub
π’ Marketing Agency
βHLR verification without sending SMS is brilliant. We validate B2B leads in real-time, improving sales efficiency by 40%. The location data helps us personalize outreach. Our SMS delivery rate improved from 73% to 96% in 3 months.β
Amanda Foster
Sales Operations Director at LeadGen Pro
π’ B2B Sales Platform
βThe API handles our global SMS campaigns across 232 countries flawlessly. VoIP number detection prevents us from hitting fraud traps. We process 10M validations monthly with zero downtime. Best phone validation service we've used in 10 years.β
Thomas Schmidt
Principal Engineer at MailFlow
π’ SMS Service Provider
βReal-time form validation increased our conversion rate by 28%. Users love the instant format corrections and country detection. The JavaScript SDK was plug-and-play with our React forms. SMS delivery rate on welcome messages went from 92% to 99.7%.β
Lisa Chang
Frontend Lead at SignupFlow
π’ Conversion Optimization
βBulk validation saved our SMS reputation. We inherited a list with 35% invalid phone numbers. Phone-check.app cleaned it in 2 hours, preventing carrier blocking. The detailed risk scoring helps us segment our sends. Worth every penny.β
Robert Taylor
SMS Deliverability Specialist
π’ Marketing Automation
βThe phone validation service let us test thoroughly before committing. Now we validate 100K+ phone numbers monthly. The webhook integration keeps our CRM always clean. Support team is incredibly responsive and helpful.β
Nina Patel
Product Manager at CRMFlow
π’ Customer Platform
βWe validate every phone number at checkout, reducing payment fraud by 73%. The API speed (35ms) doesn't impact checkout flow. Risk scoring identifies suspicious patterns. Chargeback losses dropped from $15K to $4K monthly.β
Carlos Mendez
Fraud Prevention Lead at PaySecure
π’ Payment Processing
βPhone validation is now part of our data quality pipeline. We validate before every campaign, maintaining >98% delivery rate. The API reliability is exceptional - 99.99% uptime over 18 months. Integrates perfectly with our marketing stack.β
Rachel Green
Data Quality Manager at DataFirst
π’ Enterprise MarTech
βThe pay-as-you-go credits are perfect for our seasonal business. We buy credits during peak times without monthly commitments. Validation accuracy helped us achieve the highest SMS engagement rates in our industry. Fantastic service!β
James Wilson
Marketing Director at SeasonalSales
π’ Retail E-commerce
Everything you need to know about our phone validation service
πHow do I integrate the phone validation API?
π‘Sign up β Get API key β Make your first call. Most developers integrate in under 5 minutes with our copy-paste examples. Works with any programming language.
πWhat makes your phone validation different?
π‘99.6% accuracy across 232 countries. Real-time carrier lookups, no SMS sending, instant fraud detection. Process 8,000 numbers/minute with bulk validation.
πCan I test before paying?
π‘Yes! Try our live demo at /try to validate any phone number instantly. Professional service with instant setup.
πHow does phone validation prevent fraud?
π‘Detects VoIP numbers, high-risk patterns, and suspicious activity. Customers report 85% fraud reduction. Real-time verification stops fake signups.
πWill this improve my SMS marketing?
π‘Absolutely! Remove invalid numbers to reduce costs by 40%. Better delivery rates, regulatory compliance, and higher ROI on campaigns.
πIs my data secure and private?
π‘Bank-level security, SOC 2 certified, GDPR compliant. Phone numbers processed in memory only, never stored. Regular security audits.