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Facebook Outage Analysis — October 4, 2021

Why Is DNS Monitoring Important?

DNS is a foundational service without which your users would be unable to find or connect to your web services. Most businesses rely on external DNS providers to report on performance and DNS integrity, but they have little insight into DNS service, reachability, performance and real-time DNS record security. ThousandEyes sheds new light on the performance of DNS infrastructure, from caching servers to external providers. We monitor and test the performance of DNS servers, resolvers and records in your network and those of your providers across the DNS hierarchy. With ThousandEyes, you can see DNS performance side-by-side with routing, path tracing and app availability to help you collect data and test for DNS problems, such as server performance, caching errors, record misconfigurations and cache poisoning.

Test and Monitor DNS Resources Before Your Users Are Impacted

With ThousandEyes, you can monitor on-premises, hosted or third-party DNS servers to check availability, resolution speed and record mappings. You can also trace the entire DNS hierarchy for a record, from top-level domain servers to the authoritative server and understand if DNS infrastructure outside of your control is causing an outage or performance degradation.

DNS Monitoring with ThousandEyes

ThousandEyes monitors externally hosted and on-premises DNS infrastructure, including both authoritative and caching servers, to identify and troubleshoot DNS availability, performance and security issues.

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ThousandEyes Helps Perform DNS Server Troubleshooting

  • Understand the connectivity to authoritative servers with easy auto-discovery, routing, path tracing and availability metrics
  • Measure the availability, responsiveness and record accuracy of your local DNS resolvers, across all office and data center locations
  • Easily customize, configure and export alerts on DNS availability, record mappings and DNSSEC
  • Detect DNS cache poisoning in your network or in remote networks by alerting on record mappings
  • Verify the DNSSEC keychain from the bottom up

Featured Blog Posts

Ranking the Performance of Public DNS Providers
Modern DNS and the Value of One Second

Why ThousandEyes?

Monitor DNS Performance

Understand the connectivity to DNS servers with easy auto-discovery, routing, path tracing and availability metrics using next-generation DNS troubleshooting tools

Quickly Pinpoint Issues

Perform DNS performance tests and watch for DNS cache poisoning in your network or in remote networks with alerts on changes to record mappings

DNSSEC Validation

Verify the DNSSEC keychain from the bottom up to eliminate DNS errors

Start Monitoring Your DNS Services

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