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codfish/check_dns.sh

Created January 5, 2015 19:55
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Check DNS of a domain/subdomain to see if it's properly configured using whois & dig
Raw
check_dns.sh
# returns whois info for the domain, including name servers
whois codfish.io
# use dig to lookup any subdomain on a name server(s)
dig @ns-371.awsdns-46.com codly.codfish.io
# dig will output details of the lookup. If configured properly you should see
# the details in the ANSWER SECTION ... e.g.
;; ANSWER SECTION:
codly.codfish.io. 300 IN CNAME codly.herokuapp.com.
# subdomain that doesn't exist/resolve
# dig still returns details of the lookup, but there's no ANSWER SECTION
dig @ns-371.awsdns-46.com fake.codfish.io
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