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Martin Polden 1f140df49f
Merge pull request #95 from craSH/patch-1
2 weeks ago
cmd/echoip Implement response cache 5 months ago
http Add additional location fields (#84) 3 weeks ago
iputil Add additional location fields (#84) 3 weeks ago
useragent return parsed and raw user agent 10 months ago
.gitignore Download GeoIP databases on startup 5 months ago
.travis.yml Re-use Dockerfile when building on Travis 1 year ago
Dockerfile Use Go 1.13 in Docker build 7 months ago
LICENSE Update copyright year 2 months ago
Makefile Allow overriding docker command 1 month ago Update to include -C/--cache-size 2 weeks ago
go.mod Bump geoip2 5 months ago
go.sum Bump geoip2 5 months ago
heroku.yml Download GeoIP databases on startup 5 months ago
index.html Created a dark theme for index.html (#71) 6 months ago


Build Status

A simple service for looking up your IP address. This is the code that powers


Just the business, please:

$ curl

$ http

$ wget -qO-

$ fetch -qo-

$ bat -print=b

Country and city lookup:

$ curl

$ curl

$ curl

$ curl


$ curl -H 'Accept: application/json'  # or curl
  "city": "Bornyasherk",
  "country": "Elbonia",
  "country_iso": "EB",
  "ip": "",
  "ip_decimal": 2130706433,
  "asn": "AS59795",
  "asn_org": "Hosting4Real"

Port testing:

$ curl
  "ip": "",
  "port": 80,
  "reachable": false

Pass the appropriate flag (usually -4 and -6) to your client to switch between IPv4 and IPv6 lookup.


  • Easy to remember domain name
  • Fast
  • Supports IPv6
  • Supports HTTPS
  • Supports common command-line clients (e.g. curl, httpie, wget and fetch)
  • JSON output
  • ASN, country and city lookup using the MaxMind GeoIP database
  • Port testing
  • Open source under the BSD 3-Clause license


  • To scratch an itch
  • An excuse to use Go for something
  • Faster than and has IPv6 support


Compiling requires the Golang compiler to be installed. This package can be installed with go get:

go get

For more information on building a Go project, see the official Go documentation.

Docker image

A Docker image is available on Docker Hub, which can be downloaded with:

docker pull mpolden/echoip


$ echoip -h
  echoip [OPTIONS]

Application Options:
  -f, --country-db=FILE        Path to GeoIP country database
  -c, --city-db=FILE           Path to GeoIP city database
  -a, --asn-db=FILE            Path to GeoIP ASN database
  -l, --listen=ADDR            Listening address (default: :8080)
  -r, --reverse-lookup         Perform reverse hostname lookups
  -p, --port-lookup            Enable port lookup
  -t, --template=FILE          Path to template (default: index.html)
  -H, --trusted-header=NAME    Header to trust for remote IP, if present (e.g. X-Real-IP)
  -C, --cache-size=SIZE        Size of response cache. Set to 0 to disable

Help Options:
  -h, --help                   Show this help message