Hi have a home lab setup with Nginx Proxy manager with few CNAMS setup which perfectly works fine.

But I have one issue as my company blocking all CNAME urls as it has wildcard ssl certs. It does allow to open Main URL but not any of the subdomain urls.

mainDomain.com works

sub.mainDomain.com is blocked

With the existing setup can I have additional URLS with port at the end to access the same subdomain backend urls something like mainDomain.com:1234 with the existing nginx proxy manager setup.

sub.mainDomain.com ==> backendIP:1234 ------Blocked

mainDomain.com:1234 ==> backendIP:1234 -----if this can be done with the existing NgnixProxyMamanager?