Note: If you are filtering DNS for Proxy & Filter Avoidance or have configured you network to only allow connection to trusted DNS Servers the first two will fail so use the Web Request options

linux / wsl DNS Query

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

Windows DNS QUery

nslookup myip.opendns.com resolver1.opendns.com

Linux using Web Request

echo $(curl -s ifconfig.me)
# or
curl -s https://ifconfig.me; echo 

Powershell WEB rEQUEST

(Invoke-WebRequest ifconfig.me/ip).Content