To filter WhatsApp virtual numbers by operator using SMSVerifier API, use the numbers listing endpoint with service and operator filter parameters, specifying the desired network provider codes.
Understanding SMSVerifier API Numbers Endpoint
The SMSVerifier API provides a dedicated endpoint to retrieve lists of available virtual phone numbers for various services, including WhatsApp. This endpoint is essential when you want to programmatically select numbers based on specific criteria such as country, operator, or network provider.
The core endpoint for fetching numbers is getNumbers. It accepts multiple query parameters that control the selection, such as:
- service: The target service for verification, e.g.,
whatsapp. - country: The country code to filter numbers geographically (e.g.,
usfor the United States). - operator: The operator or network provider code to filter numbers by mobile network.
This endpoint returns a JSON response listing phone numbers that match the specified filters and are currently available for purchase.
Operator codes differ by country and are predefined by SMSVerifier and its upstream providers. Always refer to the official operator list to ensure accuracy.
Filtering Numbers by Operator or Network Provider
Filtering by operator helps you control the network origin of your virtual numbers. This is crucial for WhatsApp, as certain operators may have better delivery rates, fewer blocks, or pricing advantages.
To filter numbers by operator, pass the operator parameter with the operator code(s) in your API request. These codes represent mobile network providers — for example, 310260 might represent a US Verizon operator.
You can specify multiple operators by separating their codes with commas:
operator=310260,310410This will return numbers available on either of these two operators.
Use operator filtering to test WhatsApp account creation across different networks and reduce risk of number bans.
Practical Example: Filtering WhatsApp Numbers
Suppose you want to request available WhatsApp numbers from the US on a specific operator. Your API call could look like this:
curl "https://smsverifier.com/stubs/handler_api.php?api_key=YOUR_API_KEY&action=getNumbers&service=whatsapp&country=us&operator=310260"
This request queries the SMSVerifier API for WhatsApp numbers in the United States serviced by the operator with code 310260.
The response will include only numbers matching these filters that are ready for instant purchase and SMS reception.
Handling No Availability Cases
Sometimes the API returns an empty list if no numbers are available for the selected operator. This can happen due to high demand or limited operator inventory.
Relying on a single operator may cause API responses with no available numbers, impacting your verification workflow.
To mitigate this, consider:
- Trying alternative operators within the same country.
- Expanding country filters if your use case permits.
- Implementing fallback logic in your code to retry with different filters automatically.
Tips for Optimizing Filter Usage
Check operator codes first
Always verify the latest operator codes from SMSVerifier's API docs to avoid invalid filters.
Use multiple operators
Filter by a list of operators to increase the chance of getting available numbers quickly.
Monitor availability trends
Track which operators typically have better uptime and adjust your filters accordingly.
Frequently asked questions
What API endpoint should I use to list WhatsApp virtual numbers filtered by operator?
How do I find operator or network provider codes for filtering?
Can I filter virtual numbers by multiple operators at once?
Is it possible to filter numbers by country and operator simultaneously?
What if no numbers are available for the selected operator?
Does filtering by operator affect the pricing or delivery speed?
Ready to filter WhatsApp numbers by operator with SMSVerifier API?
Register and get your API key to start filtering virtual numbers precisely for WhatsApp verification.
Read the API docs