Domain Inspector

Answering your Domain Inspector questions

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Does your current metrics solution include domain level insights? Continue reading for additional information on Fastly’s Domain Inspector service.


What is Domain Inspector?

Domain Inspector provides you with a dataset and visualizations that offer real-time visibility and historical reporting of domain-level metrics delivered by a Fastly service. It allows you to monitor traffic for a fully qualified domain name without requiring you to send log data to a third-party data collector.

How does it work?

Domain Inspector aggregates domain response data received by a specified service and presents that information either as visualizations in the web interface or as a JSON-formatted data stream.  Examples of the kinds of domain data aggregated include requests, edge or origin response status codes, and cache hit ratios. For more detailed information about specific features check out our documentation.

What are some typical use cases for Domain Inspector?

  • Proactive domain monitoring: Proactively monitor and react in a timely manner to domain traffic issues that arise at the origin or the edge.

  • Live event monitoring: Get end-to-end visibility of domain traffic during critical calendar and live events. 

  • Troubleshoot errors: Account for every origin/edge response, origin/edge byte, and status code to get insight into origin or edge failures.

  • Individual domain tracking: Enumerate any domain for individual domain tracking or domains set up for specific business visibility.

  • Evaluate your investment: Quantify the extent to which Fastly services reduce origin infrastructure and egress costs, especially with shielding.


What level of reporting do you provide?

Real time data is reported in one-second periods up to the last complete second for a 120-second window. Historical data aggregation and retention timeframes are 45 days within the Enterprise level for Domain Inspector.

Domain Inspector Level

Aggregation Timeframe

Retention Timeframe


Per minute

45 days

Are there any limits on the number of domains a service can support?

We currently support up to 500 unique domains within a single Fastly service.  Contact to discuss options in supporting a higher domain count.

Are wildcard domains supported?

Yes, wildcard domains (e.g. * are supported. However, due to the unlimited cardinality with wildcard domains, we will aggregate all provided domain metrics under a single wildcard domain name entry.

Enablement and Pricing

How do I get access to Domain Inspector?

Customers who have a paid account and a contract for Fastly’s services can also purchase Domain Inspector at the Enterprise level for a separate additional monthly fee.  Contact us at to discuss access.

How do you price this service?

Fees for Domain Inspector are changed per each unique domain sending traffic through Fastly each month. This is tiered based usage pricing where the number of domains place you into a committed tier with a consistent charge every month. Any domains used above the committed amount will be charged an overage rate. To discuss pricing in more detail, contact

What if I am not a Fastly customer?

If you are not yet a Fastly customer, we’ll work directly with you to immediately transition you to Fastly’s edge cloud platform. Contact

What if I have more specific questions about Domain Inspector?

If you have any questions that are not covered in this FAQ contact