Firefox соединяется с сайтами, которые я не открыл

Я начал играть с Wireshark, и я видел, что Firefox соединяется с некоторым дюйм/с, даже когда я не подключен ни к какому сайту

lsof -i -a -p 'firefox_pid' 

COMMAND  PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
firefox 2329 user   37u  IPv4 118753      0t0  TCP user-N501JW:37086->ec2-52-51-142-18.eu-west-1.compute.amazonaws.com:https (ESTABLISHED)
firefox 2329 user   39u  IPv4 129663      0t0  TCP user-N501JW:43368->server-52-85-74-162.lhr3.r.cloudfront.net:http (ESTABLISHED)
firefox 2329 user   68u  IPv4 140375      0t0  TCP user-N501JW:37680->wj-in-f189.1e100.net:https (ESTABLISHED)
firefox 2329 user   88u  IPv4 137617      0t0  TCP user-N501JW:34916->par03s13-in-f78.1e100.net:https (ESTABLISHED)
firefox 2329 user   90u  IPv4 137568      0t0  TCP user-N501JW:58404->151.101.1.69:https (ESTABLISHED)
firefox 2329 user   97u  IPv4 137533      0t0  TCP user-N501JW:33818->93.184.220.29:http (ESTABLISHED)
firefox 2329 user   98u  IPv4 114507      0t0  TCP user-N501JW:58916->ec2-54-201-82-144.us-west-2.compute.amazonaws.com:https (ESTABLISHED)
firefox 2329 user  121u  IPv4 134757      0t0  TCP user-N501JW:36918->par21s05-in-f142.1e100.net:https (ESTABLISHED)
firefox 2329 user  124u  IPv6 137540      0t0  TCP user-N501JW:35008->xx-fbcdn6-shv-01-cdg2.fbcdn.net:https (ESTABLISHED)
firefox 2329 user  125u  IPv4 133683      0t0  TCP user-N501JW:57762->a23-217-230-180.deploy.static.akamaitechnologies.com:https (ESTABLISHED)

Как знать, кто выполняет те запросы?