This is my site URL - https://www.thecodedeveloper.com
But this Unknown site http://newnuk.com/dialio/Web_doctor/viewinfo/139
means i am not owner of this site
But once i view source this page http://newnuk.com/dialio/Web_doctor/viewinfo/139 then i found on this page include below files
https://www.thecodedeveloper.com/wp-content/themes/publisher-child/css/jquery.datetimepicker.min.css?ver=4.9.8' type='text/css' media='all' />
these files path coming from my site.
I want to know: 1) Is that effect my site speed ? 2) how can i stop it ?
Thanks