Data Insights: DNS Query Test Results Around the World
Gartner’s CloudHarmony website contains freely available data for about 20 Cloud DNS services, including DNS Network Performance. This is based on testing performed via public end user testing probes. CloudHarmony hosts multiple probes to measure DNS performance for cloud services.
What you will see on CloudHarmony are the measurements of the amount of time in milliseconds (ms) to perform a DNS query. Two types of DNS Query tests are available: Recursive and Authoritative Query tests. In this post I will focus on the former.
Recursive Query tests use a client's designated DNS resolvers to query an uncached DNS record. Such queries will propagate up a recursive chain to an authoritative DNS server. A wildcard name (A) record and random hostnames are used to force full recursive lookups during each test iteration. For recursive tests, 6 warmup iterations are followed by 12 test iterations.
For this Data Insights post, I have used Recursive Query test data from CloudHarmony for 18 DNS services:
Microsoft Azure DNS
Amazon Route 53
DNS Made Easy
Oracle Cloud Infrastructure DNS
Google Cloud DNS
Rage4 Networks DNS
IBM Cloud DNS
The available data goes from February 2015 to November 2021 and covers Africa, Asia, Central America, Europe, North America, Oceania, and South America regions.
For each region, the fastest, slowest and average DNS Query were calculated through the average for the records of the 18 DNS Service Providers in that region. The average DNS Query that represents each region is displayed in the map below. The fastest average DNS Query belongs to North America with 69.61 ms, whilst the two slowest fall in South America (249.11 ms) and Africa (294.39 ms).
The chart below shows the fastest, slowest, and average DNS Query for every region in a visual side-by-side comparison:
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