Whether all attempts to determine the ip address successfully if Master DNS shutdown and secondary DNS work
52812
Why is geo-redundant DNS necessary for small sites?
84919
Fastest method to determine my PC's IP address (Windows)
144762
Getting a machine's external IP address with Python
30232
Ping IP returned "destination net unreachable", even with different network
41972
Linux: How to get a machine's IP address?
115015
How do I find out which program and process ID accesses a given IP address in Windows?
51471
How can I determine the IP of my router/gateway in Java?
16098
DNS referral / delegation: which DNS is responsible; How to delegate the right way?
49640
how a dns query works
158438
Programmatically obtain DNS servers of host
148095
Locally, External IP Resolves to Router Admin
145930
What happens to my domain if the TLD fails?
43050
Can I perform a DNS lookup (hostname to IP address) using client-side Javascript?
30956
Command-line to list DNS servers used by my system
126450
How can I get to know the IP address for interfaces in C?
81013
DNS not resolving on Mac OS X
106770
How can I know the DHCP settings offered by a server?