--- title: "Liemi (@Liemichecknumber) | Hashnode" description: "Trade BD | Focus on phone number validation, data quality & API tools WhatsApp: +447763387262 Telegram：liemichecknumber" url: "https://hashnode.com/@Liemichecknumber" --- @Liemichecknumber # Liemi @Liemichecknumber · NY · Joined January 2026 Trade BD | Focus on phone number validation, data quality & API tools WhatsApp: +447763387262 Telegram：liemichecknumber [Website](https://www.numberchecker.ai/) ### [How to Validate International Phone Numbers Correctly](https://liemichecknumber.hashnode.dev/how-to-validate-international-phone-numbers-correctly?utm_source=hashnode&utm_medium=feed) Learn how to validate international phone numbers correctly to improve global marketing performance. Discover how bulk verification, smarter data screening, 4 min read · [liemichecknumber.hashnode.dev](https://liemichecknumber.hashnode.dev/how-to-validate-international-phone-numbers-correctly?utm_source=hashnode&utm_medium=feed) [Feb 13](https://hashnode.com/posts/how-to-validate-international-phone-numbers-correctly/698f350699c3aa59fa96e8d6) ### [Phone Validation API: What Developers Should Look For](https://liemichecknumber.hashnode.dev/phone-validation-api-what-developers-should-look-for?utm_source=hashnode&utm_medium=feed) Discover what developers should look for in a phone validation API for bulk WhatsApp number detection. Learn how real-time intelligence, carrier insights, a 4 min read · [liemichecknumber.hashnode.dev](https://liemichecknumber.hashnode.dev/phone-validation-api-what-developers-should-look-for?utm_source=hashnode&utm_medium=feed) [Feb 12](https://hashnode.com/posts/phone-validation-api-what-developers-should-look-for/698ddb57a76f1b4bfc639a47) ### [How Age & Gender Detection Works from Phone Numbers](https://liemichecknumber.hashnode.dev/how-age-and-gender-detection-works-from-phone-numbers?utm_source=hashnode&utm_medium=feed) Learn how businesses estimate age and gender from phone numbers using carrier data, usage patterns, and machine learning, enhancing marketing, analytics, an 3 min read · [liemichecknumber.hashnode.dev](https://liemichecknumber.hashnode.dev/how-age-and-gender-detection-works-from-phone-numbers?utm_source=hashnode&utm_medium=feed) [Feb 5](https://hashnode.com/posts/how-age-and-gender-detection-works-from-phone-numbers/698466698335429e21613094) ### [Preventing Fake Accounts Using Phone Number Intelligence](https://liemichecknumber.hashnode.dev/preventing-fake-accounts-using-phone-number-intelligence?utm_source=hashnode&utm_medium=feed) Protect your platform from fake signups and fraud with advanced phone number intelligence. Learn how real-time validation, carrier insights, and risk detect 3 min read · [liemichecknumber.hashnode.dev](https://liemichecknumber.hashnode.dev/preventing-fake-accounts-using-phone-number-intelligence?utm_source=hashnode&utm_medium=feed) [Feb 4](https://hashnode.com/posts/preventing-fake-accounts-using-phone-number-intelligence/6982e9e8ff718d0eaa9ac04c) ### [WhatsApp Number Checker: Use Cases for Businesses](https://liemichecknumber.hashnode.dev/whatsapp-number-checker-use-cases-for-businesses?utm_source=hashnode&utm_medium=feed) Discover how businesses use a WhatsApp number checker to verify contacts, improve messaging reachability, and optimize communication efficiency at scale. 3 min read · [liemichecknumber.hashnode.dev](https://liemichecknumber.hashnode.dev/whatsapp-number-checker-use-cases-for-businesses?utm_source=hashnode&utm_medium=feed) [Feb 3](https://hashnode.com/posts/whatsapp-number-checker-use-cases-for-businesses/6981a1f6a3514bdd4a509a06)