DynDNS assigns a static hostname to a public ip-address.
The router/server must be reachable from the internet.
Private IP-addresses can not be used (Provider NAT).
DNS Registry managed by FreeDNS.afraid.org
(Signup there and register your hostname within *.dyn.ch)
Tools: [DNS Uptime] [DNS Check]
Abuse for *.dyn.ch handled by
abuse(at)afraid.org
(responsive Admin with strict No-Spam policy enforced)
Contact Domain Owner via Form at FreeDNS.afraid.org