# FindIPv6

> FindIPv6 provides practical IPv6 lookup, WHOIS, conversion, CIDR, compression, and expansion tools for network engineers and developers.

## Tools

- [IPv6 Lookup](https://findipv6.com/find): Look up cached IPv6 address, network, geolocation, and technical details.
- [IPv6 WHOIS](https://findipv6.com/ipv6-whois): Search IPv6 WHOIS and RDAP registration data.
- [IPv4 to IPv6 Converter](https://findipv6.com/ipv4-to-ipv6): Convert an IPv4 address to IPv4-mapped IPv6 notation.
- [IPv6 CIDR to Range](https://findipv6.com/ipv6-cidr-to-range): Calculate the first address, last address, and size of an IPv6 CIDR range.
- [IPv6 Compress](https://findipv6.com/ipv6-compress): Convert an expanded IPv6 address to compressed notation.
- [IPv6 Expand](https://findipv6.com/ipv6-expand): Expand an IPv6 address into eight four-character hexadecimal groups.

## Guides

- [What is IPv6?](https://findipv6.com/what-is-ipv6): Introduction to IPv6 and why it succeeds IPv4.
- [IPv6 vs IPv4](https://findipv6.com/ipv6-vs-ipv4): Practical comparison of IPv4 and IPv6 addressing.
- [How IP Networks Work](https://findipv6.com/how-ip-networks-work): How addressing, routing, and packets work on IP networks.
- [IPv6 Address Notation](https://findipv6.com/ipv6-address-notation): IPv6 address formatting, shortening, and expansion rules.

## Site Information

- [Cookies and Privacy](https://findipv6.com/cookies): Cookie and privacy information.
- [XML Sitemap](https://findipv6.com/sitemap.xml): URLs available for search engine crawling.