I like the extra detail from curl ipinfo.io particularly if using Tor or a VPN, but dig +short myip.opendns.com @208.67.222.222 is usually quick

I like the extra detail from curl ipinfo.io particularly if using Tor or a VPN, but dig +short myip.opendns.com @208.67.222.222 is usually quicker than anything curl / wget based, as it doesn't use http. You can substitute `host` if `dig` isn't available.