Domain Name	Found on	Still exists
mail1.alt4.gmail-smtp-in.l.google.com	Subdomain Center
my.alt4.gmail-smtp-in.l.google.com	Subdomain Center
remote.alt4.gmail-smtp-in.l.google.com	Subdomain Center
staging.alt4.gmail-smtp-in.l.google.com	Subdomain Center
vpn.alt4.gmail-smtp-in.l.google.com	Subdomain Center
ww1.alt4.gmail-smtp-in.l.google.com	Subdomain Center
www.alt4.gmail-smtp-in.l.google.com	Subdomain Center

Found 7 subdomains.

Results foralt4.gmail-smtp-in.l.google.com