About CheckIM
CheckIM checks phone numbers in bulk: upload a file and find out which numbers are registered and active on Telegram, WhatsApp, Facebook, Viber, Signal, RCS, iMessage, Apple, Microsoft or Amazon. You can also check email addresses and look up the carrier of North American numbers.
Upload a number file on the web, send it to the Telegram bot, or order from your own servers through the API. When the check finishes, download the result file from the order.
We can check 300 to 500 million numbers a day. You pay per record, and every order shows its quote before you pay.
CheckIM is operated by PWD Digital Agency Pty Ltd, founded in 2008.