![Comparing TCP and UDP Response Times of DNS Root Servers](/images/hK0LlyuZfLdJFvl2F9PlBCodOTU=/1267/fill-192x192-c100/2012-09-21.dns-tcp-udp.ratio.png)
Comparing TCP and UDP Response Times of DNS Root Servers
• 8 min read
We did some measurements on the round-trip (RT) values of DNS queries for SOA (Start of Authority) records from our RIPE Atlas probes, over both UDP and TCP. We plotted the TCP/UDP ratios on graphs, and found that, as expected, for the majority of the measurements, it is around 2. However, we also …