❯ curl 0tx.net

Columbus, United States · Amazon.com, Inc.

Additional information

IP address 216.73.217.11
Decimal 3628718347
Country United States
Country (ISO) US
Region Ohio
City Columbus
Latitude 39.9612
Longitude -82.9988
ASN AS16509
Organization Amazon.com, 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 0tx.net 216.73.217.11
curl 0tx.net/country United States
curl 0tx.net/country-iso US
curl 0tx.net/city Columbus
curl 0tx.net/asn AS16509
  • 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 0tx.net/json Retrieve all IP information. See response.

Response

{
  "ip": "216.73.217.11",
  "ip_decimal": 3628718347,
  "country": "United States",
  "country_iso": "US",
  "country_eu": false,
  "region_name": "Ohio",
  "city": "Columbus",
  "latitude": 39.9612,
  "longitude": -82.9988,
  "asn": "AS16509",
  "asn_org": "Amazon.com, 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": "216.73.217.11",
  "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.