Telegram Phone Checker

Check if a phone number is registered on Telegram using the apipick Telegram Checker API. Returns registration status, Telegram user ID, username, first/last name, and data center ID. Use when the user wants to verify Telegram registration for a phone number, find a Telegram username by phone number, or check whether someone uses Telegram. Requires an apipick API key (x-api-key). Get a free key at https://www.apipick.com.

apipick Telegram Phone Checker

Check Telegram registration status for any phone number with international country code.

Endpoint

text

POST https://www.apipick.com/api/check-phone-telegram

Authentication: x-api-key: YOUR_API_KEY header required. Get a free API key at https://www.apipick.com/dashboard/api-keys

Request

json

{"phone_number": "[phone]"}

Phone number must include international country code (e.g. +86 for China, +1 for US).

Response

json

{
  "code": 200,
  "registered": true,
  "user_id": 123456789,
  "username": "example_user",
  "first_name": "John",
  "last_name": "Doe",
  "dc_id": 2,
  "message": "User found successfully"
}

If registered is false, user_id, username, first_name, last_name will be null/empty. Only publicly visible Telegram profile information is returned.

Error Codes

Code	Meaning
400	Invalid phone number format
401	Missing or invalid API key
402	Insufficient credits

Cost: 1 credit per request

Usage Pattern

1. Use $APIPICK_API_KEY env var as the x-api-key header value; if not set, ask the user for their apipick API key
2. Ensure the phone number includes a country code
3. Make the POST request
4. Report registration status and available profile info

See references/api_reference.md for full response field descriptions.