domain name system - How do I redirect www to non-www in Route53?

I host my site at domain.com.

My DNS entries in Route53 are as follows:

domain.com      A       xxx.xxx.xxx.xxx      300
domain.com      NS      stuff.awsdns-47.org  172800
domain.com      SOA     stuff.awsdns-47.org  900

I would like to redirect traffic from www.domain.com to domain.com, as currently this just returns a 404. This question on SO suggested a PTR record, and I added that:

www.domain.com  PTR     domain.com           300

but it didn't work. What should I be doing?

Answer

PTR is for setting up reverse IP lookups, and it's not something you should care about. Remove it.

What you need is a CNAME for www:

www.domain.com  CNAME  domain.com 300