Why is no IPv6 address detected?

Your internet provider, router or VPN does not carry IPv6. Many providers still run IPv4 only, and some VPN clients deliberately disable IPv6 to prevent leaks. Everything works normally without it.

Can I convert an IPv6 address to IPv4?

Not directly. They are separate address spaces, and there is no arithmetic that maps one to the other. Dual-stack connections simply hold one of each, which is why this page shows both.

What Is My IPv6 Address? — Check IPv6 Support Instantly

Q: What is my IPv6 address?

Your IPv6 address is the 128-bit hexadecimal address your provider assigns, such as 2001:db8::8a2e:370:7334. It is shown at the top of this page if your connection supports IPv6.

Reading an IPv6 address

An IPv6 address is 128 bits, written as eight groups of four hexadecimal digits separated by colons. Two shortcuts make them shorter than they first appear: leading zeros inside a group are dropped, and one run of all-zero groups collapses to a double colon.

So 2001:0db8:0000:0000:0000:0000:0000:0001 is normally written 2001:db8::1. Both are the same address. The double colon may appear only once, so the expansion is never ambiguous.

Why your IPv6 address changes

Unlike IPv4, where your router keeps one public address, IPv6 gives each device its own. Modern operating systems use privacy extensions, which rotate the host half of the address every few hours specifically so a device cannot be tracked across networks by its address.

The result is that reloading this page tomorrow will likely show a different IPv6 address even though nothing about your connection changed. That is the feature working as designed. The network prefix — the first half — stays stable and is what identifies your connection.

Can you convert IPv6 to IPv4?

Not in any general sense, and this is a common misconception. They are separate address spaces with no arithmetic mapping between them. A dual-stack connection simply holds one address of each kind, which is why both appear above.

There are narrow transition mechanisms — IPv4-mapped addresses written as ::ffff:203.0.113.42, and NAT64 gateways used on IPv6-only mobile networks — but these are protocol plumbing, not a conversion you can perform on an arbitrary address.

Turning IPv6 on

If this page reports no IPv6 and you want it, check in this order:

Your provider. If they do not offer IPv6, nothing downstream can create it. This is the most common cause.
Your router. IPv6 is often present but disabled by default. Look for an IPv6 section in the WAN settings.
Your VPN. Many clients disable IPv6 deliberately, because a leaking v6 route would bypass the tunnel. If your VPN does this, it is protecting you.
Your device. IPv6 can be switched off per network adapter, though it is enabled by default everywhere.

There is no urgency. IPv4 will keep working for years. For the full comparison, read IPv4 vs IPv6.