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I prefer ipinfo.io

You can even lookup info for other up addresses. E.g. https://ipinfo.io/1.1.1.1

Plus if you use curl, it will return JSON instead of HtML
curl ifconfig.co/json
If you use powershell / invoke-restmethod it will return json and get deserialised into a structured object, too.

    PS C:\> irm ipinfo.io

    PS C:\> $x = irm ipinfo.io
    PS C:\> $x.timezone
    Europe/London
Personally, I use http://checkip.dyndns.org/ by habit, with its one-line return.
No it wont, server need to return JSON format itself.

Your example doesn't work. It needs to be:

    irm ipinfo.io/json
Your other example can be get like this:

    irm http://checkip.dyndns.org | % HTML | % body
It will work. The server will return JSON. The URL http://ipinfo.io/ returns HTML if the Accept header indicates that you want HTML, and JSON if there is no header, a wildcard header, or a header that requests JSON. As far as I can see, irm doesn’t add an Accept header, so the command jodrellblank provided will fetch JSON and work correctly.
Doesnt work on Windows 10 using latest pwsh
Works on Windows 10 using Windows PowerShell. In Pwsh it does seem to need /json
I don't know where this is pulling data from, but:

> Country United Kingdom

> Country (ISO code) GB

> In EU? true

Well, that's inaccurate for a start.

I presume the reason is GDPR checking.

Has the UK data protection law deviated significantly from GDPR?

AFAIK data protection law has not (yet, at least) deviated significantly in the UK vs GDPR.

But if that's the reason, it should be labelled as such: "GDPR applies" or something.

If that is the case, then it's incorrectly showing false for Norway, who as an EEA member is subject to the GDPR.
It is a GitHub project, there's already an issue for the UK:

https://github.com/mpolden/echoip/issues/130

Perhaps you ought to open one for Norway? (I don't think it would be appropriate for me to do it because I am not seeing the issue, not being in Norway.)

Done, thanks
> I don't know where this is pulling data from

Free version of MaxMind's GeoIP - a lot of services use them but the free version is the most inaccurate. That being said, not sure it's a mistake on the EU thing?

The UK has unquestionably left the EU.
Still uses GDPR though, so perhaps the label really refers to using EU data law save and they've not updated it to reflect this technicality.
Presuming that the "in-EU" is actually meant to refer to "subject to most EU legislation, and in particular the GDPR", then it's incorrect in the opposite way for Norway: it shows false.
Looks great but these services have a tendency to come and go. Bad actors just end up hammering it. But I've been using icanhazip.com for years and it's still going strong.
I tend not to use these sort of services except for quick hack purposes, which I suppose this is exactly designed for. Unfortunately, those needs vary so widely I can't try to keep track of these sort of services and just Google/DDG for something similar when I need it. Unless this pops up on the first page of a Google/DDG search, it's unlikely I'll ever use it.

If the software behind the service is available and looks like it'll be easily usable for years because it has few to no dependancies that are likely to deprecated, I might actually commit the effort to memory and use it for all similar demands, similar to how I keep track of specific CLI *nix tools which I can rest assured, even if there are no updates and potential security issues, most are going to be usable at some future date in a pinch.

DDG will straight up tell you what your ip/geo location is, just search "ip address"
Same with Google “what is my ip”
Searching "ip" is enough on DDG. And for Google "my ip" works.
I've been using ipecho.net for a while as well. Just ipecho.net/plain to get your IP back in plaintext. Not affiliated, just what I've been using.
I've been using ifconfig.me for a decade or more.
If someone want non-rate-limted IP info here is:

https://lumtest.com/myip.json

https://lumtest.com/echo.json

It's powered by largest residential proxy network so they almost certainly never gonna ban your IP.

What is a residential proxy network?
yeah that seems interesting

  $ whois 52.202.152.73
  OrgName:        Amazon Technologies Inc.
I guess Amazon? Would be funny if this actually ran over Amazon Sidewalk but I doubt that.
You are looking at the IP of lumtest.com not the service behind it which is what the OP was referring to.
A wretched hive of scum and villainy.

But seriously, it's basically a front end to a bunch of people who have been incentivized (or fooled) into installing a proxy server on their home computers. It's primarily of interest as a way to make certain types of fraud (like ad fraud and credit card fraud) much harder to detect.

One note is that that one doesn't seem to support ipv6
http://icanhazip.com/ is my favourite one of these services, for simplicity and also as I can always remember the URL :)
I use https://wtfismyip.com/ for similar reasons :)
This one also shows both your IPv6 and your IPv4 at the same time, which none of the other ones linked in these comments seems to do
Pro of icanhazip.com is that you can curl it directly, it returns your address and nothing else; you don't have to parse the result to get the value, which is a big plus when used in a script:

    curl icanhazip.com
    curl ipv4.icanhazip.com
    curl ipv6.icanhazip.com
You can curl ifconfig.co as well, uses user agent sniffing to just return the IP
Yeah there are definitely different services for different use cases!
curl wtfismyip.com/text

curl wtfismyip.com/json

cURL has flags for this!

        curl -4 icanhazip.com
        curl -6 icanhazip.com
Curl icanhazip.com has become muscle memory for me.
Not sure I'd trust the expertise of someone who doesn't know how to redirect to https...
For a service like this one, it is essential not to automatically redirect to https, because many simple and/or command line clients do not automatically follow (resolve) a HTTP redirect answer.

This service also works perfectly fine with https://ifconfig.co/

It's not as if your IP address is private information, it's right there in the headers...
Isn't it the user agent's job to support your preferences?
Nice, I'm gonna miss the chicken [0] though... or not, the IP chicken is very easy to remember.

[0] https://ipchicken.com/

I prefer the kitten: https://ipkitten.com

(And this ifconfig.co doesn't seem to actually, you know, work which is a big hindrance)

Held my breath and refreshed in the hope that the gif changed with every load. Was not disappointed.
Here is my favorite. only using DNS:

$ nslookup myip.opendns.com resolver1.opendns.com

Wow. That's a great idea! nslookup is available on more devices than curl/wget.
Put it another way, if you cannot lookup dns, odds are curl won't work. Of course, some nets might require the use of internal dns servers and block outbound traffic to dns.
I always like to learn new trick. I'm definitely adding this nslookup trick to my IT swiss army knife kit. Thanks
With dig:

$ dig +short @resolver1.opendns.com myip.opendns.com

https://ifconfig.me/

$ curl ifconfig.me

129.6.255.60

$ curl ifconfig.me/all

ip_addr: 129.6.255.60

remote_host: unavailable

user_agent: curl/7.68.0

port: 52332

Biggest gripe with ifconfig.me is the default cURL response does not include a newline.
You can also hit v4.ifconfig.co to force ipv4
curl v4.ifconfig.co gives me an ipv6 address
it does for me too... maybe they've changed it or maybe we just don't have a v4 equivalency?
It's very good that it doesn't redirect to HTTPS. I frequently work with little devices which have a curl/wget version that only supports very basic HTTP, but no HTTPS. It's always a pain to find a website which will work with that.
It's great to have services like this.

For the benefit of anyone interested: for a "self-hosted" solution, you can do this entirely within Nginx. Here's an example config:

    server {
      listen 80 default_server;
      listen [::]:80 default_server;

      listen 443 default_server;
      listen [::]:443 default_server;

      # Use Letsencrypt for SSL. This part will depend on your own setup.
      ssl_certificate /etc/letsencrypt/live/<my domain>/fullchain.pem;
      ssl_certificate_key /etc/letsencrypt/live/<my domain>/privkey.pem;

      server_name <my domain>;

      # Deny all access at all paths; useful if you're hosting other stuff behind
      # the same Nginx server (e.g. reverse proxy)
      location / {
        deny all;
      }

      # At /ip, return 200 with the client IP address in the body
      location = /ip {
        default_type text/plain;
        return 200 '$remote_addr';
      }
    }
this service does a lot more than just return your remote_ip, which wont work behind a load-balancer or other proxy unless you configure realip module. and also need to add geoip module to do all the location stuff
Good points both.

That said, do you know of any software library that exposes the Geoip database (or at least Geoip Lite which you one easily obtain for free) in a nice API? Like how a lot of programming languages have tzinfo/tzdata libraries for querying the Tz database.

Maxmind do APIs for a bunch of language. I've used the python one and it works well (with Lite), but see here their list:

https://dev.maxmind.com/geoip/geoip2/web-services/

I thought maxmind has some kind of terms change that forced account signup and some other issues 'because of some privacy law' like gdpr - maybe the Cali one?

So it has ruined my second favorite wordpress security plugin - and MaxMind not really usable like it once was (?)

nginx with GeoIP2 module does exactly same for me for years by now.
You can even have the JSON version:

    location /json_ip {
        default_type application/json;
        return 200 "{\"ip\":\"$remote_addr\"}";
    }
This can also be done with HAProxy

    listen whatismyip
        bind :::80 # listen on ipv4/ipv6
        bind :::443 ssl crt /etc/haproxy/ssl/fullchain.pem
        mode http

        http-request return status 200 content-type "text/plain" lf-string "%[src]" if { path /ip }
        http-request return status 200 content-type "application/json" lf-string "{\"ip\":\"%[src]\"}" if { path /json_ip }
        http-request deny
Along the same lines, if you want to make your own AWS Lambda /API Gateway version of this:

    def lambda_handler(event, context):
        return {
            'statusCode': '200',
            'headers': None,
            'body': event.get('requestContext', {}).get('identity', {}).get('sourceIp', 'unknown')
        }
I do this, though my lambda is a bit more complex in practice, since I have some triggers that say "if this thing reports a new IP, do something".

Of course, AWS provides this basic service as checkip.amazonaws.com

That's a brilliant way of adding and removing SSH security group rules for digital nomads
That's exactly what I use it for. I have a small program on my laptop that makes a request of my lambda every now and then (and if it senses a change of the network). It triggers a change in the firewall rules for a SSH server.

Between that and Mosh, I barely even notice when I change networks.

It is even easier with Caddy's `respond` directive[0], placeholders[1], and automatic HTTPS.

Caddyfile:

  example.com {
      respond "{remote_host}"
  }
[0] https://caddyserver.com/docs/caddyfile/directives/respond

[1] https://caddyserver.com/docs/caddyfile/concepts#placeholders

One more reason to love that extraordinary web server. It is really wonderful, sad that it is not more used.

I work in IT (was a sysadmin for years, still administer my own servers) and I hated the configuration of the web servers (first Apache, then nginx) - mostly because I was too lazy to read the docs from beginning to end.

This changed with caddy. It is simple, fast, reliable, HTTPS first with LE. Great.

been using this for few years. As far as I know, can't return IPv4/IPv6 only from nginx without using separate server block to enforce one of them
(comment deleted)
is the "Is EU?" flag up-to-date? a UK Ip address yields true, Switzerland one yields false
I mean, if you really really want my IP, you need to at least be asking for microphone or video permissions... otherwise, you are only going to get my default route! I work on a VPN product, and threw this together to get all my IP addresses, VPN be damned ;P. https://rv.saurik.com/wtfip/
For what it is worth, I have found that the STUN protocol is also an option for discovering this sort of information. There are lists of public stun servers out there [0]. Finding a client is a little more difficult than just using curl, I grant, but not impossible.

[0]: https://gist.github.com/mondain/b0ec1cf5f60ae726202e

I just use the maxmind API directly, which is super cheap and has no rate limit to my knowledge. This site is using the maxmind dataset anyways.

https://dev.maxmind.com/geoip/geoip2/web-services/

I wish sites would prefer browser-provided location to services like these. I'm constantly being placed in some random city five or six hundred km away, where my ISP also happens to have customers, even though I have Firefox configured to report accurately (geo.provider.network.url = data:application/json,{"location":{"lat":43.5,"lng":-80.5},"accuracy":1000}).
I know a guy who owns the domain ipa.sh that he intended to use as a replacement for ifconfig.me because it was slow and unavailable a lot.

Referring of course to the new Linux commands "ip a sh". :)

I hope he gets around to deploying it properly some day.

Slightly OT: Some similar services also expose useful data like if IP is a VPN, a threat/bot, hosting provider or ISP, or a proxy.

I always wondered where this info comes from, looking at the similar pattern I presume from the same provider. Is it a premium service from MaxMind or what?

My 2cents:

  http://checkip.amazonaws.com/

  http://whatismyip.akamai.com/

  dig +short myip.opendns.com @resolver1.opendns.com
(comment deleted)
I had some auto-tests for VPN app which were relying on similar web-service to check own IP address. One day service become unavailable and autotests got broken. IIRC it was (https://canihazip.com/s)

I decided to solve this task in a fast and reliable fashion, so I made a tool which discovers own IP address using major public STUN servers: https://github.com/Snawoot/myip

Program issues parallel queries to public STUN servers to determine public IP address and returns result as soon as quorum of matching responses reached.

Works fast and reliable, especially compared to services requiring HTTPS:

  user@dt1:~> time curl https://api.ipify.org
  45.152.165.44
  real 0m2,515s
  user 0m0,030s
  sys 0m0,019s
  
  
  user@dt1:~> time curl ifconfig.co/
  45.152.165.44
  
  real 0m0,131s
  user 0m0,011s
  sys 0m0,008s
  
  
  user@dt1:~> time myip
  45.152.165.44
  
  real 0m0,084s
  user 0m0,012s
  sys 0m0,012s
handy thing yeah - I used this like 6 years ago to write some quick bash scripts that would grab dynamic IP changes and send them to cloudflare to update a DNS record and create our own dynamic DNS service!