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WHOIS Lookup API

Retrieve detailed WHOIS information about an IP address.

GET /whois/{ip}
Example Request:
curl -X GET "https://ipwtf.com/api/whois"
Example Response my ip info both IPv4 and IPv6 if available :
{
    "ipv4": {
        "ip": "1.1.1.1",
        "ipNumber": "16843009",
        "ipVersion": 4,
        "countryName": "Australia",
        "countryCode": "AU",
        "latitude": -27.467541,
        "longitude": 153.028091,
        "timeZone": "+10:00",
        "zipCode": "4000",
        "cityName": "Brisbane",
        "regionName": "Queensland",
        "as": "CloudFlare Inc.",
        "asn": "13335",
        "isProxy": 0
    }
}
Example Request to get information of ip 1.1.1.1:
curl -X GET "https://ipwtf.com/api/whois/1.1.1.1"
Example Response:
{
    "ipv4": {
        "ip": "1.1.1.1",
        "ipNumber": "16843009",
        "ipVersion": 4,
        "countryName": "Australia",
        "countryCode": "AU",
        "latitude": -27.467541,
        "longitude": 153.028091,
        "timeZone": "+10:00",
        "zipCode": "4000",
        "cityName": "Brisbane",
        "regionName": "Queensland",
        "as": "CloudFlare Inc.",
        "asn": "13335",
        "isProxy": 0
    }
}
Example Request: 2606:4700:4700::1111
curl -X GET "https://ipwtf.com/api/whois/2606:4700:4700::1111"
Example Response:
{
    "ipv6": {
        "ip": "2606:4700:4700::1111",
        "ipNumber": "50543257694033307102031451402929180945",
        "ipVersion": 6,
        "countryName": "United States of America",
        "countryCode": "US",
        "latitude": 37.774929,
        "longitude": -122.419418,
        "timeZone": "-08:00",
        "zipCode": "94153",
        "cityName": "San Francisco",
        "regionName": "California",
        "as": "CloudFlare Inc.",
        "asn": "13335",
        "isProxy": 0
    }
}

Simple WHO Lookup API

Retrieve basic IP information.

GET /who/{ip}
Example Request to get my ip:
curl -X GET "https://ipwtf.com/api/who"
Example Response:
{
    "ip": "1.1.1.1",
    "countryCode": "AU",
    "countryName": "Australia"
}
Example Request:
curl -X GET "https://ipwtf.com/api/who/1.1.1.1"
Example Response:
{
    "ip": "1.1.1.1",
    "countryCode": "AU",
    "countryName": "Australia"
}

Response Formats

The API supports multiple response formats. You can specify the format using the ?format= query parameter. The default format is JSON.

Format Description Example
json (default) Returns the response in JSON format. 
{ "ip": "8.8.8.8", "countryCode": "US", "countryName": "United States" }
xml Returns the response in XML format. 
<response><ip>8.8.8.8</ip><countryCode>US</countryCode><countryName>United States</countryName></response>
csv Returns the response in CSV format. 
ip,countryCode,countryName
8.8.8.8,US,United States
line Returns a plain text response with one key-value pair per line. 
ip: 8.8.8.8
countryCode: US
countryName: United States

Example API Calls

Here are examples of how to request different response formats:

  • JSON (default): /api/whois/8.8.8.8
  • XML: /api/whois/8.8.8.8?format=xml
  • CSV: /api/whois/8.8.8.8?format=csv
  • Line-separated: /api/whois/8.8.8.8?format=line