I inadvertently hit someone else's server when refreshing XXXX.localtunnel.com that I had left open in my browser (but since closed my tunnel). That was annoying.
Two suggestions:
1) Randomly assign subdomain names instead of reusing existing ones.
2) Increase the length of the subdomain from 4 characters to 6 characters. With 4 characters, each being a-z0-9, there are 36^4 subdomain possibilities. 36^6 would make it much more difficult to locate an active subdomain through trial and error.
Two suggestions:
1) Randomly assign subdomain names instead of reusing existing ones.
2) Increase the length of the subdomain from 4 characters to 6 characters. With 4 characters, each being a-z0-9, there are 36^4 subdomain possibilities. 36^6 would make it much more difficult to locate an active subdomain through trial and error.
36^4 = 1,679,616
36^5 = 60,466,176
36^6 = 2,176,782,336