IPv4 to IPv6 Converter
Map standard IPv4 addresses to their IPv6 equivalents using RFC-compliant transition schemes.
IPv4 to IPv6 Converter
Quick examples:
Why Convert IPv4 to IPv6?
As the world runs out of IPv4 addresses, the transition to IPv6 is accelerating. However, simply "converting" an address isn't enough because the protocols are different. We use mapping mechanisms to represent IPv4 addresses within the IPv6 address space, allowing new software to handle legacy connections seamlessly.
IPv4-mapped IPv6
Defined in RFC 4291. These addresses are used to embed IPv4 addresses in an IPv6 format. They are typically written as ::ffff:192.0.2.128.
- Used by OS network stacks (Dual Stack)
- Allows IPv6 sockets to handle IPv4 traffic
6to4 Translation
A system that allows IPv6 packets to be transmitted over an IPv4 network. It uses the reserved prefix 2002::/16.
- Public IPv4 required for valid routing
- Forms a valid /48 subnet for a site
Frequently Asked Questions
Can I ping an IPv4 address from an IPv6-only host?
Generally no, unless you are using a translation mechanism like NAT64/DNS64. Simply converting the address notation doesn't create connectivity between the incompatible protocols.
Is IPv4-compatible (::x.x.x.x) still used?
No, it is deprecated. Modern systems use IPv4-mapped addresses (::ffff:x.x.x.x) instead. We show the deprecated format only for historical reference or debugging legacy systems.