WhatsApp Bulk Number Checker API: Fast Phone Number Verification

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Check the details of the WhatsApp of the input global number, whether it is a WhatsApp account. Service based on short-term cache and real-time detection.

Upload Detection File Code example:

curl --location 'https://api.checknumber.ai/v1/tasks' \
--header 'X-API-Key: API-KEY' \
--form 'file=@"./number.txt"' \
--form 'task_type="ws"'

Check Task Status Code example:

curl --location 'https://api.checknumber.ai/v1/gettasks' \
--header 'X-API-Key: API-KEY' \
--form 'task_id="task_id"'

Response for the upload detection file successful

{
  "created_at": "2024-10-19T18:24:56.450567423Z",
  "updated_at": "2024-10-19T18:24:56.450567423Z",
  "task_id": "cs9viu7i61pkfs4oavvg",
  "user_id": "test",
  "status": "pending",
  "total": 0,
  "success": 0,
  "failure": 0
}

Response for the processing status

{
  "created_at": "2024-10-19T18:24:56.450567423Z",
  "updated_at": "2024-10-19T18:33:22.86152082Z",
  "task_id": "cs9viu7i61pkfs4oavvg",
  "user_id": "test",
  "status": "processing",
  "total": 20000,
  "success": 6724,
  "failure": 0
}

Provide a response indicating the task is completed and include the download URL for the results.

{
  "created_at": "2024-10-19T18:24:56.450567423Z",
  "updated_at": "2024-10-19T18:53:43.141760071Z",
  "task_id": "cs9viu7i61pkfs4oavvg",
  "user_id": "test",
  "status": "exported",
  "total": 20000,
  "success": 20000,
  "failure": 0,
  "result_url": "https://example-link-to-results.xlsx"
}

Upload file request url

POST https://api.checknumber.ai/v1/tasks

Upload file request parameters

Parameter	Description
`file`	`file`, Upload file, each line should contain one phone number in E.164 format
`task_type`	`string`, Task type, set to “ws”

Check task status request url

POST https://api.checknumber.ai/v1/gettasks

Check task status request parameters

Parameter	Description
`task_id`	`string`, Task ID returned from task creation

Result Fields

Field	Description	Example
`Number`	Phone number in E.164 format	+41798284651
`whatsapp`	Whether number has active WhatsApp account	yes, no

Response Format

Field	Description
`created_at`	Timestamp when task was created
`updated_at`	Timestamp of last task status update
`task_id`	Unique task identifier
`user_id`	ID of user
`status`	Task status: `pending`: Queued and waiting `processing`: Currently processing `exported`: Results available for download
`total`	Total phone numbers processed
`success`	Numbers successfully identified
`failure`	Numbers that failed processing
`result_url`	(Optional) Download URL for results when status is `exported`

Status Codes

Status	Description
`200`	`charge`, Request successful, task created or status retrieved
`400`	`free`, Bad request, invalid parameters or file format
`500`	`free`, Internal server error, retry later