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Quickly identify the CDN provider used by any domain to optimize website performance and security.
Checks DNS and HTTP signals for CDN use and sends the domain to a scan service. No detection does not prove a CDN is absent; the observed IP is not guaranteed to be the nearest delivery node.
Enter details to see results
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
A content delivery network (CDN) serves web content through a distributed delivery system. This checker accepts a domain or URL and returns a likely provider label when it detects matching clues. Depending on the result, it can also show a CNAME value, an edge IP address, and response-header evidence.
A CNAME is a DNS alias that points one name to another. A provider-associated alias or response header can help identify a delivery service, while an edge IP can provide another clue. The result panel shows the provider label together with any available evidence, so you can inspect why a provider may have been identified.
Provider identification is an inference from the public signals available during the lookup. A site may use multiple delivery services, change DNS or routing, hide origin details, or expose different responses from different network locations. An unknown label therefore does not prove that a domain has no CDN.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
For example, use example.com or a full HTTP/HTTPS URL. A URL path is not needed for provider identification.
Start the lookup and wait for the result. The submitted value is normalized to its hostname before checking, so a path does not define a separate lookup target.
Read the likely provider name, then inspect any returned CNAME, edge IP, and response headers. Some fields may be absent when the check cannot obtain that signal.
For a site you administer, compare the observation with your DNS and CDN configuration. If the provider label is unknown, treat that as inconclusive and investigate the hostname's records and delivery setup directly.
Use cases
See how the tool fits into real work and everyday tasks.
A web administrator can check a public hostname and compare the visible CNAME or edge address with the intended delivery configuration.
A student can compare provider labels and available records across domains to understand that DNS aliases, network addresses, and headers are different kinds of evidence.
A support engineer can use the returned clues as an initial lead before checking authoritative DNS settings, provider dashboards, and the site's own response behavior.
Q&A
Find concise answers to common questions and confusing cases.
No. It means this check did not return a recognizable provider result. A CDN can be present even when public clues are unavailable or not recognized.
No. It is a likely identification from available signals, not an ownership record. Confirm it against DNS configuration or the service account for a domain you manage.
The lookup may not have a usable value for every evidence type. DNS setup, routing, response behavior, and the particular hostname affect which clues are visible.
Either is accepted. The check strips an HTTP or HTTPS prefix and any path, then uses the hostname for the lookup.
Notes
Review scope, result limitations, and important precautions before use.
Results reflect detectable public signals for the queried hostname at lookup time. They do not establish which provider serves every asset, whether traffic is currently cached, the site's performance, or the full network architecture. DNS and routing can vary by location and change over time. Use this check as a starting clue, not proof of ownership or absence.
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