# DNAME records

A CNAME (Canonical Name) record creates an alias between hostnames in the same domain or in different domains.
A DNAME (Delegation Name) record creates an alias between different domains.
For example:

NS1 is authoritative for the left.org domain:

left.org DNAME right.com

NS2 is authoritative for the right.com domain:

www.right.com A 1.1.1.1
*.right.com A 2.2.2.2

All DNS queries for a hostname in the left.org domain are answered with an alias that points the same hostname, but in right.com domain:

C:\> nslookup

> www.left.org

Name:    www.right.com
Address:  1.1.1.1
Aliases:  www.left.org

> right.left.org

Name:    right.right.com
Address:  2.2.2.2
Aliases:  right.left.org

References

RFC 2672