Cloudmersive Validate
FreemiumLiveLast verified 24 Sept 2026
Validates email deliverability, phone numbers, EU VAT IDs, addresses and domains in one family.
Example request
curl -X POST https://api.cloudmersive.com/validate/phonenumber/basic -H "Apikey: $API_KEY" -H "Content-Type: application/json" -d '{"PhoneNumber": "1.800.463.3339", "DefaultCountryCode": "US"}'Free tier, in plain English
Free tier includes 600 calls a month that never expire; paid plans start at $19.99/month for 10,000.
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