STEP 1
Get domains that have 17 and 19 letters.
Your domain has other length: yourserver.com - 14 letters
You can use subdomains like:
s1.yourserver.com - 17 letters
serv.yourserver.com - 19 letters
or make some random free domains at
www.dot.tk - users will not see them anyway:
otssuperdomain.tk - 17 letters
23asdeqbvdfwerxs.tk - 19 letters