This is my experience on knowing about the XMLRPC enable/disable checking online. I was informed by my hosting provider that it would be better if I disable teh XMLRPC on my WordPress site because of security issues. I asked them to make it for me and they replied it's done. He said that the XMLRPC was disabled through the .htaccess file. But, when I checked the site's .htaccess file, I wasn't able to find any codes related to XMLRPC.
Now I wanted to check online whether XMLRPC has been enabled or disabled on my site. So, after going through some of the WordPress questions and answers, I have found this site (online tool) to check the status of XMLRPC of any websites. I hope this would help you too. Here is the link: http://xmlrpc.eritreo.it/