Number Insight Standard

You can use Nexmo's Number Insight Basic API to retrieve a user's landline or mobile number, including checking to see that it is registered to an operator. This can help you verify that a phone number is real and give you information on how to format the number.

Number Insight Standard API is a synchronous, easy-to-use RESTful web service. For any phone number you can:

  • Retrieve the international and local format.
  • Know the country where the number is registered.
  • Line type detection (mobile/landline/virtual number/premium/toll-free)
  • Detect mobile country code (MCC) and mobile network code (MNC)
  • Detect if number is ported
  • Identify caller name (USA only)
  • Check if phone number is reachable
curl ""

The response from the API contains the following data:

    "status": 0,
    "status_message": "Success",
    "request_id": "e98e0dfb-c485-491b-8d2a-283f35e21d04",
    "international_format_number": "447700900000",
    "national_format_number": "07700 900000",
    "country_code": "GB",
    "country_code_iso3": "GBR",
    "country_name": "United Kingdom",
    "country_prefix": "44",
    "request_price": "0.00500000",
    "remaining_balance": "10.000000",
    "current_carrier": {
        "network_code": "23420",
        "name": "Hutchison 3G Ltd",
        "country": "GB",
        "network_type": "mobile"
    "original_carrier": {
        "network_code": "23410",
        "name": "Telefonica UK Limited",
        "country": "GB",
        "network_type": "mobile"
    "ported": "assumed_ported",
    "roaming": {"status": "unknown"}