[9dev]

Instead of placing the numbers in the path, why not use a subdomain, e.g. 5678.example.com, and have that routed using a wildcard DNS record, then let users copy-paste the full ~~~domain name~~~ URL?

[joskvw]

This is a valid approach, but it might lead to a more complicated setup compared to the alternative approach shown in the article (example.com/5678).