{"slug":"factline-dev-v1-phone-verify-f465db","title":"Phone number validation for any country","host":"factline.dev","method":"GET","resource":"https://factline.dev/v1/phone/verify","category":"code","description":"Phone number validation for any country: valid and possible checks against allocated number ranges, E.164, international and national formatting, country and calling code, and line type (mobile, landline, VoIP, toll-free, premium rate, shared cost) with an SMS-capable hint. For signup, KYC, CRM clea","price_listed":0.003,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":3,"reported_payers_30d":2,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"phone":"+31612345678"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"country":{"description":"Optional ISO country for national numbers, e.g. NL, DE, GB","type":"string"},"phone":{"description":"Phone number, international (+31612345678) or national with country, e.g. 0612345678","type":"string"}},"required":["phone"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Phone number validation for any country: valid and possible checks against allocated number ranges, E.164, international and national formatting, country and calling code, and line type (mobile, landline, VoIP, toll-free, premium rate, shared cost) with an SMS-capable hint. For signup, KYC, CRM cleanup, SMS and calling agents. National numbers accepted with a country code, e.g. 0612345678 with country=NL.","last_updated":"2026-10-10T00:03:39.851Z","schemes":["exact"]}