MyWebDNS

Independent DNS observations

Check CNAME records across available probe locations.

CNAME records point one DNS name at another canonical name.

14 probes configured
  • EvidenceAnswer, TTL, probe status and latency
  • Record typesA through CAA, including PTR
  • LocationProbe-reported coordinates, never random markers

QUERY / DNS

Run a DNS check

DNS

Use a hostname for most records. PTR also accepts an IPv4 or IPv6 address.

Native browser record menu.

Lookup requests are protected against cross-site submission and rate limited.

Observation desk

DNS results

Every row is one sampled probe observation. Agreement describes matching answers among probes that returned data; it is not an uptime or country-wide propagation score.

Ready for a lookup

Enter a domain and choose a record type to populate the observation map and result table.

DNS record field guide

How to read a CNAME record check

CNAME records point one DNS name at another canonical name.

When to use this lookup

Use a CNAME lookup to verify SaaS, CDN and verification aliases without confusing the alias target with its final A or AAAA address.

Example

www.example.com CNAME edge.example.net
Answer shape
A canonical DNS target name; additional lookups resolve that target to its final address data.
Common failure
The alias points to a missing target, forms a loop, or coexists with record data that is not permitted at the same owner name.
Related checks
A record, AAAA record

Troubleshooting checklist

  • Do not publish a CNAME alongside other data at the same owner name.
  • Check the target name separately when the alias resolves but the service does not.
  • Look for alias loops or targets that no longer exist.