A CNAME record creates an alias from one hostname to another. It is commonly used for www, subdomains, and SaaS integrations where the provider hosts the target. A CNAME is convenient because the target can change its IP addresses without you updating your DNS. This lookup shows the CNAME target across resolvers so you can validate that the alias points where you expect.
Common mistakes include placing a CNAME at the apex (not allowed in strict DNS), creating a CNAME that conflicts with other records at the same name, or leaving an old CNAME after moving providers. If you see a chain of CNAMEs, verify the final target resolves to A or AAAA. Long chains can add latency and occasionally break resolution.
If you need related checks, try A record check tool and Check DNS propagation check online.
Traditional DNS does not allow a CNAME at the apex because it would conflict with SOA and NS records. Some providers offer ALIAS or ANAME records to simulate this.
Check for conflicts with other records of the same name. Also confirm the target hostname exists and resolves to A or AAAA.
No. CNAME is DNS-level aliasing. A redirect is an HTTP response from a web server. You may need both depending on your setup.
There is no strict limit, but long chains add lookup steps and latency. Many resolvers cap the number of CNAMEs they will follow.
Not directly. Email delivery depends on MX and related records. CNAMEs are mainly for hostnames used in web and service routing.
Propagation and caching can cause differences. Verify the authoritative zone and wait for TTL expiration if you just made changes.