Currently there are several options:
- ip.42.pl
- jsonip.com
- httpbin.org
- ipify.org
Below are exact ways you can utilize each of the above.
ip.42.pl
from urllib2 import urlopen
my_ip = urlopen('http://ip.42.pl/raw').read()
This is the first option I have found. It is very convenient for scripts, you don’t need JSON parsing here.
jsonip.com
from json import load
from urllib2 import urlopen
my_ip = load(urlopen('https://ipv4.jsonip.com'))['ip']
Seemingly the sole purpose of this domain is to return IP address in JSON.
httpbin.org
from json import load
from urllib2 import urlopen
my_ip = load(urlopen('http://httpbin.org/ip'))['origin']
httpbin.org is service I often recommend to junior developers to use for testing their scripts / applications.
ipify.org
from json import load
from urllib2 import urlopen
my_ip = load(urlopen('https://api.ipify.org/?format=json'))['ip']
Power of this service results from lack of limits (there is no rate limiting), infrastructure (placed on Heroku, with high availability in mind) and flexibility (works for both IPv4 and IPv6).
EDIT: Added httpbin.org to the list of available options.
EDIT: Added ipify.org thanks to kert’s note.