Nslookup also has a powerful interactive mode that enables admins to initiate zone transfers and display various resource record types. Admins can send a reverse lookup query using the IP address instead of the hostname, like this: nslookup 192.0.2.2. The system's configured DNS server returns the results. It's available for Windows, Linux and macOS, which is helpful for admins who work on all three platforms, as it's convenient to learn only one tool when supporting multiple OSes.Īdmins can type nslookup workstation1 to resolve the IP address for workstation1. Nslookup is a powerful name resolution utility. Multiple tools exist to query DNS manually. For example, admins might try to test connectivity to a particular DNS server, check that a specific server returns an expected result, or identify domain or other information about the DNS service. However, it can be useful for troubleshooting to initiate name resolution queries manually. The system's name resolution client automatically queries DNS without user intervention for tools such as web browsers, ping and scripts. any packet filtering on routers between the client and DNS server permits traffic over port 53/udp.any routers between the client and DNS server are functional and.firewall settings on the DNS server permit inbound queries on port 53/udp.the DNS server is up, and the service is running.If this ping fails, confirm the following items: Do this test with the DNS server's IP address as that is what the client computer uses.įor example, if the DNS server is found at 192.0.2.127, enter ping 192.0.2.127. Once admins identify which DNS servers the client uses, they can test connectivity using the ping command.
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