How to Easily Determine Your Internet Protocol

An address bar showing blog.vulcansphere.com with shield and padlock denoting HTTPS connection, a green "6" mean that only IPV6 address serving the website
IPvFoo add-on on the right side showing IPv6-only connection (source: Author)

You can use IPvFoo browser extension (available on Chrome and Firefox) to determine if a website you visited is served by IPv6 or IPv4 connection (Internet Protocol, in case you are wondering).

More and more websites are enabling IPv6 support to serve their visitors, so do the internet service providers (ISP) and mobile operators. But still, there are some websites that stuck with IPv4-only connection.

An address bar showing blog.vulcansphere.com with shield and padlock denoting HTTPS connection, a green "6" and red "4" mean that both IPv4 and IPV6 addresses are serving the website
IPvFoo browser extension showing both IPv6 and IPv4 connection (source: Author)

Many websites are still served by both IPv6 and IPv4 addresses, although this blog is already IPv6-capable but the WordPress addresses (for Jetpack) are still mostly IPv4-only for now.

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