example.ac.uk

This domain is reserved and can be safely used for examples and documentation. You may make use of this domain without permission.

For further information about the usage of this domain, please contact help@jisc.ac.uk.

More details

The use of this domain follows the semantics of RFC 6761 §6.5 of which an amended excerpt is below:

The domain "example.ac.uk." and any names falling within that domain, are special in the following ways:

1. Users SHOULD understand that example names are reserved for use in documentation.
2. Application software SHOULD NOT recognise example names as special and SHOULD use example names as they would other domain names.
3. Name resolution APIs and libraries SHOULD NOT recognise example names as special and SHOULD NOT treat them differently. Name resolution APIs SHOULD send queries for example names to their configured caching DNS server(s).
4. Caching DNS servers SHOULD NOT recognise example names as special and SHOULD resolve them normally.
5. Authoritative DNS servers SHOULD NOT recognise example names as special.
6. DNS server operators SHOULD be aware that example names are reserved for use in documentation.