There are many tools like this, but this one aims to be compatible with most browsers and use a minimal amount of javascript. It is very limited and only shows your ip address and nothing else, no info about which AS, country or ipblock you are coming from.
Detecting your ipv4 address...
Detecting your ipv6 adrress...
Are you on some kind of system that does not have a browser or where a browser is inconvienent? You can use the API endpoints directly with something like curl and jq to get or verify your IPv4 or IPv6 Address.
On linux you can do something
like:
curl https://ipv4.bewaar.me/api/ip.json | jq '.ip'
or
curl https://ipv6.bewaar.me/api/ip.json | jq '.ip'
Or for windows using powershell:
$r = Invoke-WebRequest -Uri "https://ipv4.bewaar.me/api/ip.json"; $d = ConvertFrom-Json $r.Content; echo $d.ip
or
$r = Invoke-WebRequest -Uri "https://ipv6.bewaar.me/api/ip.json"; $d = ConvertFrom-Json $r.Content; echo $d.ip