or download this
openssl s_client -showcerts -servername 66.39.54.27 -connect css.perl
+monks.org:443 2>/nul | grep CN
i:/C=GB/ST=Greater Manchester/L=Salford/O=Sectigo Limited/CN=Sectig
+o RSA Domain Validation Secure Server CA
...
i:/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USER
+Trust RSA Certification Authority
issuer=/C=GB/ST=Greater Manchester/L=Salford/O=Sectigo Limited/CN=Sect
+igo RSA Domain Validation Secure Server CA
^C^C