The GTK Project - A free and open-source cross-platform widget toolkit
gtk.org
GTK is a free and open-source cross-platform widget toolkit for creating graphical user interfaces.
Get a complete DNS, email, SSL, HTTP and network analysis in seconds.
gtk.org
GTK is a free and open-source cross-platform widget toolkit for creating graphical user interfaces.
4 IPv4 address(es) detected.
4 IPv6 address(es) detected.
4 NS record(s); 2 or more required.
Authoritative zone record.
Both DS and DNSKEY are required.
Certificate authority restriction.
Agreement between public resolvers.
1 MX record(s).
SPF policy not found.
DMARC policy not found.
No tested DKIM selector responded.
Mail transport policy.
TLS reporting policy.
74 day(s) remaining.
Full points require at least 30 days remaining.
1 of 9 evaluated headers detected.
PTR not detected.
Two or more IPv4 addresses receive full points.
AAAA availability.
At least one address family must resolve.
HTTP/2 200
Final URL uses HTTPS.
151.101.1.91 151.101.65.91 151.101.129.91 151.101.193.91
2a04:4e42:400::347 2a04:4e42::347 2a04:4e42:200::347 2a04:4e42:600::347
Not configured
10 smtp.gnome.org.
Not configured
dns53.cloudns.net. dns54.cloudns.net. dns51.cloudns.net. dns52.cloudns.net.
dns51.cloudns.net. support.cloudns.net. 2026080602 7200 1800 1209600 3600
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
5 public resolvers queried.
8.8.8.81.1.1.19.9.9.9208.67.222.22294.140.14.14Port 25: Closed/unreachable - 7.7 ms - Port 465: Closed/unreachable - 4020.5 ms - Port 587: Closed/unreachable - 29.8 ms - 220 smtp.gnome.org ESMTP Postfix