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🔁 CNAME Record Checker
Reveal CNAME aliases to see how hostnames map to canonical domains, CDNs, and services.
CNAME Record Checker
Reveal canonical name mappings so you can confirm subdomains redirect to the intended target hostnames.
What you'll see
- Alias targets returned by the resolver, including any chained CNAME responses.
- TTL details to help you anticipate caching across resolvers and CDNs.
- Authority responses when an alias is missing or improperly configured.
Common use cases
- Validate SaaS or CDN onboarding steps that require pointing a host to a provider domain.
- Confirm marketing or app subdomains redirect to the canonical origin.
- Detect loops or unexpected intermediate hosts before go-live.
DNS Resolver
Reveal CNAME aliases to understand how hostnames map to other domains or CDN providers.
Prepared query:
www.example.comTroubleshooting tips
- CNAME records cannot coexist with other record types at the same label—use ALIAS/ANAME for apex domains.
- Follow the resolved target with a second lookup to ensure it has working A or AAAA records.
- If you see multiple chained aliases, reduce them where possible to speed up client resolution.
FAQ
- Why doesn’t my CNAME show up at the root domain?
- The DNS standard forbids CNAME records at the zone apex. Use ALIAS, ANAME, or provider-specific flattening instead.
- Will TTL changes take effect immediately?
- Resolvers honour the previous TTL until it expires. Plan changes ahead of time if you need instant cutovers.
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