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21 checks: account checks on 10 platforms, plus email checks and North American carrier lookup. All available on the web, through the Telegram bot or by API.

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is registered on Telegram.	Phone number username Premium Frozen
Active check	Among registered numbers, keeps the accounts seen online recently. You choose the number of days.	Phone number uid username Last seen Active days Premium Frozen
Extended check	The active check plus the avatar link and name.	Phone number uid username Avatar Last seen Active days Premium first_name last_name Frozen
Gender and age check	The active check plus the gender and age of the person in the avatar, read by AI.	Phone number uid username Gender Age Avatar Last seen Active days Premium
Username active check	Takes Telegram usernames instead of phone numbers and returns the account details and recent activity.	Phone number uid username Last seen Active days Premium first_name last_name

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is registered on WhatsApp.	Phone number
Active check	Among registered numbers, keeps the recently active accounts. You choose the number of days.	Original number Active time WhatsApp number Active days Business account Account status
Extended check	The active check plus the avatar link.	Original number Active time WhatsApp number Active days Avatar Business account Account status
Gender and age check	The active check plus the gender and age of the person in the avatar, read by AI.	Original number Active time WhatsApp number Active days Gender Age Avatar

Facebook

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is registered on Facebook.	Phone number

Viber

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is registered on Viber.	Phone number
Active check	Among registered numbers, keeps the accounts that were online recently. You choose the number of days.	Phone number Last offline time Active days mid

Signal

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is registered on Signal.	Phone number

RCS

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number has RCS turned on.	Phone number System

iMessage

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number has iMessage turned on.	Phone number

Apple

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is used for an Apple account.	Phone number

Microsoft

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is used for a Microsoft account.	Phone number

Amazon

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Check	What it tells you	Columns in the result file
Registered check	Tells whether a number is registered to an Amazon account.	Phone number
Amazon Japan registered check	Tells whether a number is registered to an Amazon Japan account.	Phone number

Email

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Check	What it tells you	Columns in the result file
Email registration check	Tells whether an email address is registered. Outlook, Hotmail, Yahoo, AOL and similar addresses are checked with the provider; other domains are checked with their mail server.	Email

North American carriers

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Check	What it tells you	Columns in the result file
Carrier lookup	Returns the line type, carrier, underlying carrier and location of each number.	Number Line type Country code Carrier Underlying carrier Region Region (Chinese) City

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Upload your list and CheckIM strips duplicates and invalid numbers for free, then gives you an instant quote for registration or activity checks.

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All services

Telegram

WhatsApp

Facebook

Viber

Signal

RCS

iMessage

Apple

Microsoft

Amazon

Email

North American carriers

Start bulk phone number checking & active account filtering