MacOS – How to Check What DNS Server is Being Used

dnsmacos

In Mac OS X, how do I check what DNS server I'm currently using (preferably a command line solution)?

System Preferences > Network shows 192.168.1.1, which is my router's address and not the real DNS server.

Best Answer

You could try issuing a scutil --dns | grep 'nameserver\[[0-9]*\]' at the command line. Should give you a list of DNS servers configured on your system.

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Mac – How to find IP address of a DNS server

I would assume that if you have a pcap of traffic from the target host, you could determine the IP address of the DNS server by looking for open connections to a destination IP on the DNS port (TCP/UDP 53).

Macos – How to query macOS DNS resolver from Terminal

It seems taking the effort to formulate the question I understood the problem better to perform more precise google searches and found the answer.

On macOS querying DNS is achieved by:

$ dscacheutil -q host -a name example.com
name: example.com
ipv6_address: 2606:2800:220:1:248:1893:25c8:1946

name: example.com
ip_address: 93.184.216.34

Like most macOS shell commands it is not quite as nice as the unix equivalent, but it gives me consistent results with native mac apps.

I found this from https://random.ac/cess/2018/04/12/macos-dig-vs-dscacheutil-while-using-split-dns-with-viscosity-vpn-client/

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Mac – How to find IP address of a DNS server

Macos – How to query macOS DNS resolver from Terminal

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