❯ curl ifconfig.nkdev.io

Lancaster, United States · Charter Communications Inc

Additional information

IP address 216.73.216.245
Decimal 3628718325
Country United States
Country (ISO) US
Region California
Region code CA
Metro code 803
Postal code 93534
City Lancaster
Latitude 34.6906
Longitude -118.1417
Timezone America/Los_Angeles
ASN AS20001
Organization Charter Communications Inc

Location

Approximate location based on IP address. IP geolocation data is provided by MaxMind GeoLite2.

API

All data is available programmatically. When using curl, pass the -s flag to hide the progress bar.

Plain text

These endpoints return plain text by default, with a trailing newline at the end.

Command Response
curl ifconfig.nkdev.io 216.73.216.245
curl ifconfig.nkdev.io/country United States
curl ifconfig.nkdev.io/country-iso US
curl ifconfig.nkdev.io/city Lancaster
curl ifconfig.nkdev.io/asn AS20001
  • Set the Accept: application/json header to request response as JSON.
  • Append ?ip=IP to the request URL to lookup information for a different IP. This is not supported for the /port endpoint.

JSON

These endpoints always return JSON.

Command Description
curl ifconfig.nkdev.io/json Retrieve all IP information. See response.
curl ifconfig.nkdev.io/port/<PORT> Check if given port is reachable. See port response.

Response

{
  "ip": "216.73.216.245",
  "ip_decimal": 3628718325,
  "country": "United States",
  "country_iso": "US",
  "country_eu": false,
  "region_name": "California",
  "region_code": "CA",
  "metro_code": 803,
  "zip_code": "93534",
  "city": "Lancaster",
  "latitude": 34.6906,
  "longitude": -118.1417,
  "time_zone": "America/Los_Angeles",
  "asn": "AS20001",
  "asn_org": "Charter Communications Inc",
  "user_agent": {
    "product": "Mozilla",
    "version": "5.0",
    "comment": "AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
    "raw_value": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
  }
}

Port response

This is an example response. The actual result depends on the reachability of the queried port.

{
  "ip": "216.73.216.245",
  "port": 443,
  "reachable": false
}

FAQ

How do I force IPv4 or IPv6 lookup?
Pass the appropriate flag to your client, e.g. curl -4 or curl -6.
Is automated use permitted?
Yes, but please limit automated requests to 1 request per minute. Requests exceeding this limit may receive a 429 status code or be dropped entirely.
Can I run my own instance?
Yes. The source code and documentation are available on GitHub.