e.g. my cheap hosting on cPanel lets me do this through a simple HTTP req https://docs.cpanel.net/cpanel/domains/dynamic-dns/ https://docs.cpanel.net/cpanel/do

e.g. my cheap hosting on cPanel lets me do this through a simple HTTP req https://docs.cpanel.net/cpanel/domains/dynamic-dns/ https://docs.cpanel.net/cpanel/domains/dynamic-dns/ My ISR only supports DynDNS and NOIP, so I just curl this URL every day.