Antideo is an API service that helps in identifying disposable/temporary email address, know spam or scam emails, email health, free or a company domain, IP health check, location detection and phone number validation services. Our clients are able to ensure that they are able to ensure the quality of their inbound leads from their online forms and their sales team spend their effort on the right leads
Numverify - Global phone number validation and lookup API
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
RealValidito - Phone Validator | Free Phone Number Validation & Phone Number Lookup Service | Realvalidito
PhoneGenerator.net - Generate random phone numbers for all countries using the mobile phone generator. These numbers are fake, but they are built using the validations of telephone numbers.
Proofy - Quickly validate and verify your email lists.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.