curl can't connect to fqdn but can connect to the IP address

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http://serverfault.com – I'm having an odd issue where I can connect to my AWS host via the IP address (Elastic IP) and via the AWS dynamic domain, but cannot connect via the FQDN. Note: I have not seen the actual DNS configuration, as I'm setting this up for a client and they handled the DNS setup. My guess is, it's an issue there, but I want to rule everything else out first. I have verified the following: DNS propagation via http://www.whatsmydns.net/ AWS security groups -- on port 80 Here's some quick info... Sample curl without specifics (sorry): curl -H "X-app-token:<TOKEN>" -H "Cont (HowTos)