Format the identifier first
Send one number in E.164 form with its country code, for example +12345678900.
Submit one number and know instantly whether it is on Telegram. The SaaS dashboard answers on the spot; the synchronous REST API returns JSON in the same response.

POST /api/v1/demo/checkNo sign-in required.
Send one number in E.164 form with its country code, for example +12345678900.
The registration check (tg) returns registration status in the registered field.
Single and multi checks return JSON in the same response for your workflow to read immediately.
Check a newly captured number before creating a CRM record, assigning an owner, or starting a consent-aware follow-up.
Add the Telegram registration result while a CRM, sales, or support record is created, reviewed, or updated.
Use the synchronous response in backend rules or support tools when the next action depends on a current Telegram signal.
Practical articles on Telegram checks, API integration, and verification workflows.

Skip the save-and-sync method: options to see whether a phone number is on Telegram without touching your address book, with steps and privacy notes.
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Compare TG checker types by input, output and volume: phone registration, username existence, approximate activity and avatar-based profile estimates.
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Add a dated Telegram registration field to CRM contacts through the API for new records or a result.csv import for backfills, then use it as one routing input.
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Separate unregistered numbers from long-quiet Telegram accounts, set your own activity bands, and plan cleanup or re-engagement with approximate activity data.
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Compare open-source Telegram phone number checker scripts from GitHub with a hosted REST API: setup, account risk, maintenance and data handling.
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Step-by-step spreadsheet method to convert phone numbers to E.164: strip symbols, drop trunk prefixes, add country codes, and validate before a Telegram check.
Read articleAnswers on Telegram registration, balance, API access, and failed validations.
Submit one number and TG Validator returns whether it is registered on Telegram in the same response: the tg product returns the registered field. There is no task queue, no polling and no callbacks. Message content is never checked.
Yes. Once a number is submitted, the result comes back in the same HTTP response — no task queue, no polling, no callbacks — and a single number typically answers in about a second. The dashboard, the single-number API and the synchronous multi-number API all run the same Telegram verdict against the same balance, so they agree. Each result reflects registration status at the moment of the check; run the check again whenever you need a current answer.
No. A check never sends a message, call, or notification to the number, and the owner cannot see that it was checked.
No. Checks run on TG Validator's own infrastructure. You never sign in to Telegram or scan a QR code, so your own Telegram account is not involved and is not at risk.
Permanent balance is a one-time purchase and does not renew. 30-day plan balance is valid for 30 days from payment; unused balance expires at the end of the current cycle. Plans renew automatically every 30 days until you turn off auto-renewal. Turning it off stops future charges; the current plan stays usable until it expires. Checks that fail or are undetermined are refunded to the relevant wallet.
Create a free account and contact support to get 100 free checks. You can top up at any time.
Permanent top-ups can be paid by credit card, other supported card payments, or cryptocurrency. 30-day plans use secure hosted card checkout and renew every 30 days. Card payments carry no extra fee. Cryptocurrency may include a service fee, shown at checkout.
Create an API key in Settings, then call /api/v1/check with the X-API-Key header, an E.164 number and service_type=tg. The registration result comes back in that same JSON response; several numbers can be sent together through the synchronous multi endpoint.
No. A result reports Telegram registration status at the time of the check. You remain responsible for consent, recipient preferences, and applicable platform rules before contacting anyone.