Status einer Domain mittels CGI/Perl

Zitat

domain name - the human-readable name assigned by the DNS to a particular IP address. To find whether the connection you are using now has a domain name and what it is, try the test for your DNS name. To look up the domain name for an IP address, login to Mallard and use the command nslookup. (For example, nslookup 131.024.2.14 returns the domain name mallard2.duc.auburn.edu) See also IP address and DNS.

Quelle:http://www.auburn.edu/helpdesk/glossary/domain_name.html

Im eigentlichen Sinne ist eine Domain nicht on/offline
Du kannst via perl/cgi "/sbin/ping" aufrufen und den Host/Ip pingen - sofern erfolgreich ist der Rechner auf den die Domain/Ip zeigt online.

Beispiel:

Zitat

$ ping telefon-treff.de
PING telefon-treff.de (217.160.93.40): 56 data bytes
64 bytes from 217.160.93.40: icmp_seq=0 ttl=57 time=714.284 ms
64 bytes from 217.160.93.40: icmp_seq=1 ttl=57 time=182.456 ms
64 bytes from 217.160.93.40: icmp_seq=2 ttl=57 time=41.844 ms
--- telefon-treff.de ping statistics ---
4 packets transmitted, 3 packets received, 25% packet loss
round-trip min/avg/max/std-dev = 41.844/312.861/714.284/289.595 ms

Alles anzeigen

-void