IP Addresses and Domain Names to Use in Examples and Documentation

Nov 25, 2011, 9:19 PM -06:00

From https://tools.ietf.org/html/rfc2606

The Internet Assigned Numbers Authority (IANA) also currently has the following second level domain names reserved which can be used as examples.
        example.com
        example.net
        example.org

From https://tools.ietf.org/html/rfc5737

The blocks 192.0.2.0/24 (TEST-NET-1), 198.51.100.0/24 (TEST-NET-2), and 203.0.113.0/24 (TEST-NET-3) are provided for use in documentation.

From https://tools.ietf.org/html/rfc3849

The prefix allocated for documentation purposes is 2001:DB8::/32

General documentation