Some firewalls will let you track the domain.
Do you have the IP address?.....if so try putting it into Google.
Are you sure it's not your ISP ......they send "handshake" requests on a frequent basis to check if you are still on line.
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This poetic animation about monsters is illustrated in a Van Gogh painterly style
Apple predictions 2017
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.