Your IP. In JSON

http://jsonip.com/

by zcopley • 15 years ago

160 65 15 years ago

jsonip.com

lurchpop• 15 years ago

add a jsonp callback option like http://jsonip.com/?callback=alert

rburgt2• 15 years ago

its there already: http://jsonip.com/nameofcallbackfunction

qixxiq• 15 years ago

You should probably include the ?callback= functionality anyway. A great deal of libraries assume it will be a get variable, and cater for it specially

i.e. jQuery with http://jsonip.com/?callback=?

clarkevans• 15 years ago

For most modern browsers, you don't need JSONP if you set the Cross-Origin Resource Sharing header, http://www.w3.org/TR/cors/

floatingatoll• 15 years ago

i see a dancing turtle at kame, but my ipv6 address is not present in the json.

JoachimSchipper3• 15 years ago

Well, yes - jsonip.com has no AAAA records. I'm not sure that reporting (only! - it only knows where the connection is from) an IPv6 address is all that useful, either.

That said, there's space for a jsonip6.com...

enneff• 15 years ago

"I'm not sure that reporting [only] an IPv6 address is all that useful"

Why not? It's useful to me, and anyone else who has an IPv6 address. The future is now. Get with the program.

geuis3• 15 years ago

I will look into adding ipv6 support

petercooper• 15 years ago

xmlip.com, yamlip.com, and plaintextip.com are all available, by the way.

billpg3• 15 years ago

Is there an HTTPS service planned? Without it, you may just be seeing the IP of a transparent proxy server.

pmjordan2• 15 years ago

HTTPS can be proxied, too, transparent or not, and you'll end up with the proxy's IP. (as the HTTP headers are encrypted along with everything else, the proxy can't even include an 'X-Forwarded-For:' header) Still useful for maintaining the full 'lock' icon when embedding in other websites, though including jsonp in an https site somewhat defeats the purpose. You'd need CORS on the server for it to be useful.

billpg3• 15 years ago

An HTTPS proxy can only work when the client explicitly configures it. A proxy that can't cache or modify traffic is more like a NAT router than a proxy.

(I imagine getting the IP of the other side of any NAT router is point of this service.)

dedward2• 15 years ago

Which might be exactly what you want if you are troubleshooting HTTP issues with customers "Go to page X and tell me what it says" rather than "what is your IP" is much more reliable.

If there's a proxy, there's a proxy - but I can't troubleshoot the customer's connectivity issue without that.

hm2k• 15 years ago

http://whatismyip.akamai.com/

Pretty reliable.

IsaacSchlueter• 15 years ago

Parsing text is too hard. It'd be easier if it was in JSON.

jdub• 15 years ago

Ha ha ha. :-)

gulbrandr• 15 years ago

Oh I see! This is what you are looking for: http://www.showmyip.com/xml/

NovaDesu2• 15 years ago

http://demontunes.com/api/?g=ip&format=json (&callback=name)

mrspeaker• 15 years ago

Great idea by the way! I don't know what for... yet... but great idea! For some reason I have a strange urge to combine this with http://openkeyval.org/

apgwoz• 15 years ago

Openkeyval is kind of cool except that it uses Memcache as the storage platform--i.e. no guarantees of persistance.

geuis3• 15 years ago

Whoa. I wrote jsonip a few months ago and never expected it to get noticed. What a pleasant surprise!

Here's the original post with some usage details. http://news.ycombinator.net/item?id=1896015

This is actually running on node.js. If anyone finds a bug or has some suggestions, email me or leave a tweet @geuis.

webXL• 15 years ago

Node.js - that was my first guess. Nice example of utility computing!

btubbs• 15 years ago

If there's a ?callback=something in the query string, you could wrap the JSON in that callback so the service can be used with JSONP.

mike-cardwell• 15 years ago

Some suggestions:

Make jsonip.com dual stack IPv4/IPv6 and work for IPv6 addresses too. Return some other useful IP information, such as the PTR, the domain name part of the PTR, and the country code and name.

Example: https://grepular.com/ipinfo

EDIT: Don't use that URL for your own stuff or I'll block it. I only put it there as an example of how the JSON should be returned.

EDIT2: Might be useful if it included the IP addresses from any X-Forwarded-For HTTP header too.

geuis3• 15 years ago

Thanks Mike. I'll start working some of these in over the next few days

gmac• 15 years ago

Some of this is already available elsewhere: I've been using http://ipinfodb.com/ to decide whether to show a region-specific alert on the front page of http://mappin.es

sghael• 15 years ago

This brings up something I'm waffling on. Whats the correct content type for JSON?

in your example returning "Content-Type: text/plain; charset=UTF-8" which is nice because FF knows to render it in the browser (good for debugging atleast).

But votes on SO seem to indicate it should be "application/json"

http://stackoverflow.com/questions/477816/the-right-json-con...

dugmartin• 15 years ago

Use application/json plus the JSONView Firefox plugin to get nice pretty printed json output.

alanh• 15 years ago

The correct content-type (MIME type) is indeed "application/json" (edit: downcased JSON, not sure why I made that typo). http://tools.ietf.org/html/rfc4627

Additionally, if no encoding is specified, UTF-8 should be assumed when dealing with JSON.

amitraman1• 15 years ago

application/json

IgorPartola• 15 years ago

IPv6 is silly to support. There are no IPv6 NATs, so you should know your IPv6 address.

jedsmith• 15 years ago

There are two scenarios where such a site has been useful to me:

1) Making sure I deprecated the right addresses in the Linux kernel, and that the kernel was using the outgoing address I wanted instead of the one it would pick via RFC 3484, and

2) Making sure IPv6 browsing is working since turning off v4 is a pain in the ass (in the setups I've had to troubleshoot v6 on, not my home network, where it's much easier).

metageek• 15 years ago

There shouldn't be IPv6 NATs, but I expect there will be once it actually gets deployed.

drdaeman• 15 years ago

{ip: "192.168.100.2, xxx.xxx.xxx.xxx"}. Why not change it to {ip: ["192.168.100.2", "xxx.xxx.xxx.xxx"]}?

Also, while I don't know any practical use, IPv6 support would be nice.

jjguy• 15 years ago

That's clever and useful. Thanks. I've used http://checkip.dyndns.org for this problem for years, but this is an improvement. Checkip:

    >>> url = urllib2.urlopen("http://checkip.dyndns.org")
    >>> url.read()
    '<html><head><title>Current IP Check</title></head><body>Current IP Address: 192.168.0.1</body></html>\r\n'

Details here: http://www.dyndns.com/developers/checkip.html

It's not as easy to parse as JSON, but nor is it very difficult. The format has not changed in years; I've got a regex running I haven't needed to adjust since day 1.

callahad• 15 years ago

You could also use: http://www.whatismyip.com/automation/n09230945.asp

pavel_lishin• 15 years ago

What a convenient URL to remember.

electrum• 15 years ago

Try this: http://myip.dnsomatic.com/

Documented here: http://dnsomatic.com/wiki/api#detecting_changes

nphase• 15 years ago

Also, icanhazip.com

burke• 15 years ago

I'll probably start using this one. Nice short domain name.

powertower• 15 years ago

http://myip.wampdeveloper.com/

Only the ip, no html tags, no formating, nothing but 1 string returned.

Also correctly deals with x-forwarded-for and all the other client/proxy/remote header fields.

Absolute minimum way of returning an IP address.

jparicka• 15 years ago

Haha .. very cool! :-))

hunterp• 15 years ago

While it is minimalist, it would be even more minimalist to just return the ip with no json wrapper.

vain• 15 years ago

i am missing something here. why does everyone here seem to think this is cool?

cake• 15 years ago

Could anyone list some practical uses ?

Corrado• 15 years ago

I built some WebSocket code that calls back to the server. I can't hardcode the "server" ip address because I want to deploy it to different places at different times. Sometimes I'm working on my laptop, sometimes its running on Amazon EC2, etc. So, with something like this I am able to build my Javascript so it always knows how to get back to the server.

<yea, I know there are lots of ways to do this, but this is the one I chose. :) sue me. >

joebananas• 15 years ago

Finding your own external, visible-to-the-internet IP. You're almost always behind some router these days, so using ifconfig or whatever is pretty useless.

ptn• 15 years ago

It got mine wrong.

there• 15 years ago

if you need geolocation information through javascript, you can use maxmind's free one:

http://j.maxmind.com/app/geoip.js

cappaert• 15 years ago

This is perfect. I've been looking for an easy way to find user location (city, state) based on IP address, without having to scrape a IP lookup service for it.

Great find!

pedrocr• 15 years ago

Outputting javascript code instead of something parseable (json probably) seems like a very bad idea. Are you really willing to eval code from a site outside your control?

A simple line-by-line regex loop should be enough to parse this though.

innes• 15 years ago

This, I think:

http://en.wikipedia.org/wiki/JSON#JSONP

Under the same origin policy, a web page served from server1.example.com cannot normally connect to or communicate with a server other than server1.example.com. An exception is the HTML <script> element.

gikrauss• 15 years ago

I think I'll replace whatsmyip.com for this: alias whatsmyip="curl -s http://jsonip.com | grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' -o"

A simple way of accessing your public IP from bash (for some reason I need to do that a lot!)

soulclap• 15 years ago

What's your business model though?

(Kidding.)

Your IP. In JSON

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