Test results for: http://dtail.ru/kraken-at-zerkalo.html
DNS (IPv6 NS)
PASS
Hostname dtail.ru does have IPv6-addressed nameservers defined.
DNS (IPv6 TLD NS)
PASS
Hostname top-level domain (ru.) does have IPv6-addressed nameservers defined.
DNS (IPv4 A Record)
PASS
Hostname dtail.ru does have an IPv4 A record (104.21.93.120, 172.67.209.212).
DNS (IPv6 AAAA Record)
PASS
Hostname dtail.ru does have an IPv6 AAAA record (2606:4700:3034::ac43:d1d4, 2606:4700:3035::6815:5d78).
DNS (MX Record)
WARN
Hostname dtail.ru does not have MX records.
DNS (Glue)
PASS
Glue does not appear to be needed; nameserver configuration for dtail.ru is not self-referencing.
IPv4 Connectivity
PASS
Successfully connected to dtail.ru on port 80 over IPv4.
IPv6 Connectivity
PASS
Successfully connected to dtail.ru on port 80 over IPv6.
IPv4 Literals
WARN
Could not establish connection to URL http://dtail.ru/kraken-at-zerkalo.html.