We're sure there's a flag at cfta-fe02.allyourbases.co - can you find it?
Solution
1.
The provided domain does not resolve to any server. Therefore, the flag must be somewhere in the DNS records. Note that a second version of the challenge does resolve to an IP address hosting a website.
2.
The flag is in a TXT record. It can be found with dig like so: dig TXT cfta-fe02.allyourbases.co The TXT record has the value flag=unlimited_free_texts.