IP and URL tools
Small conversions that come up constantly and are tedious by hand. All four run entirely in your browser.
Every tool on this page runs in your browser. Nothing typed here is sent anywhere.
IPv6
documentation (2001:db8::/32)
- Compressed
- 2001:db8::ff00:42:8329
- Expanded
- 2001:0db8:0000:0000:0000:ff00:0042:8329
- Reverse name
- 9.2.3.8.2.4.0.0.0.0.f.f.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa
- Bytes
- 20 01 0d b8 00 00 00 00 00 00 ff 00 00 42 83 29
RFC 5952 says how to write an IPv6 address: lower case, no leading zeroes in a group, and the longest run of zero groups replaced by a single ::. The compressed form above follows it.