There are several ways to test the performance of a DNS server:
1. Ping Test: This is the simplest and easiest way to test DNS server performance. You can use the Ping command and check the response time.
1. DNS Benchmark Test: You can use a DNS benchmarking tool to test the performance of different DNS servers. This will allow you to compare the performance of different DNS servers.
1. DNS Lookup Test: You can use the nslookup command to check the response time and accuracy of the DNS server.
1. Load Test: You can use a load testing tool to simulate the load on the DNS server and check its performance under heavy load.
1. ISP DNS Server Test: You can use your ISP’s DNS server to test its performance. This will give you an idea of whether you need to switch to a better DNS server.
1. Network Latency Test: You can use a network latency tool to test the latency of the DNS server. This will give you an idea of how quickly the DNS server responds to queries.