About domains and DNS
What is a CNAME record?
A DNS record that maps one name to another canonical name.
Updated: October 9, 2026
A CNAME record makes one DNS name an alias of another canonical name. It is often used to point a service name at a CDN-managed name.
Reading the result
Enter the alias hostname in DNS Lookup, select CNAME, complete verification, and search.
NetKarte shows the queried name and CNAME target. The target's A or AAAA records determine the eventual IP address.
Limitations
A CNAME owner name generally cannot contain other ordinary data. Long alias chains can add latency and failure points.
Follow an alias
In the illustrative www.example.com → edge.example.net, the left name is the alias and the right is its target. Query the target's A/AAAA in DNS Lookup to inspect published IPs. This is not an HTTP redirect to a different page URL.
No CNAME may simply mean A is configured directly. Conversely, an alias is not useful if its target cannot resolve. NetKarte does not provide a complex chain graph or loop diagnosis. Check your DNS provider's rules before changing records at the same name.
References
- IETF / RFC Editor: RFC 1034: Domain Names - Concepts and Facilities (External site)Checked: 2026-10-09
- IETF / RFC Editor: RFC 1035: Domain Names - Implementation and Specification (External site)Checked: 2026-10-09
- IETF / RFC Editor: RFC 2181: Clarifications to the DNS Specification (External site)Checked: 2026-10-09