CheckNumber.AI· 2 min read
Telegram Number Checker — Bulk Verify Accounts via Platform or API | CheckNumber.AI
Bulk-check whether phone numbers are registered on Telegram. Upload CSV on our platform — no code needed — or use REST API. From $2.50 per 10,000.
Check if a global phone number is registered on Telegram.
Telegram has grown into one of the world’s largest messaging platforms, making it essential for businesses to verify Telegram account registration for marketing, compliance, and data validation purposes.
Why Check Telegram Number Registration?
- Marketing Lists: Qualify which contacts can receive Telegram messages
- Data Validation: Verify customer phone numbers are actually registered on Telegram
- Compliance: Ensure database accuracy for B2B and B2C operations
- Lead Scoring: Prioritize leads who actively use Telegram
Telegram bulk number checker API
Official documentation: Telegram Bulk CheckNumber API.
CheckNumber verifies phone numbers in batch: upload a .txt or .csv file (one E.164 number per line), poll task status, then download the result file. All calls use the X-API-Key header.
Submit task
POST https://api.checknumber.ai/v1/tasks
| Parameter | Description |
|---|---|
file | One phone number per line, E.164 format |
task_type | tg — Telegram registration check |
curl --location 'https://api.checknumber.ai/v1/tasks' \
--header 'X-API-Key: API-KEY' \
--form 'file=@"./numbers.txt"' \
--form 'task_type="tg"'
Check task status
POST https://api.checknumber.ai/v1/gettasks
| Parameter | Description |
|---|---|
task_id | Returned when the task is created |
curl --location 'https://api.checknumber.ai/v1/gettasks' \
--header 'X-API-Key: API-KEY' \
--form 'task_id="TASK_ID"'
When status is exported, download results from result_url.
Result columns
| Field | Description | Example |
|---|---|---|
Number | E.164 phone number | +41798284651 |
telegram | Registered on Telegram | yes, no |
Task payload fields
| Field | Description |
|---|---|
created_at | Task creation time |
updated_at | Last status update |
task_id | Task identifier |
status | pending, processing, or exported |
total | Numbers in the file |
success | Completed rows |
failure | Failed rows |
result_url | Download link when exported |
HTTP status codes
| Status | Billing | Meaning |
|---|---|---|
200 | charge | Task created or status returned |
400 | free | Invalid parameters or file |
500 | free | Server error — retry later |
Integration checklist
- Use E.164 numbers only.
- Poll
/v1/gettasksuntil the task reaches a terminal state. - Follow the official docs for the latest limits and fields.
- Pricing: pricing.
FAQ
Q: How quickly can I verify 1 million Telegram numbers? A: Processing speed varies by platform. For 1M numbers, actual time depends on server load and platform rate limits.
Q: Does CheckNumber.AI send messages to the phone numbers? A: No. We only check registration status. No messages, no notifications are sent.
Q: Can I check both Telegram and other platforms in one task? A: No. Each task is platform-specific (task_type=tg for Telegram). For multi-platform campaigns, submit separate batch tasks.
Q: What happens if I run out of credits mid-task? A: The task completes processing with existing credits. Rows processed are charged; remaining rows are marked as failed.