: Custom Heroku Domain redirecting to random website I'm helping a friend out with her Rails App, and this morning the custom domain started automatically redirecting to freelancer.com instead of

@Si4351233

This sounds like an DNS zone file issue which you will need to take up with your DNS provider.

If the CNAME record where replaced with an A record as seems to be the case based on the comments then the connection would no longer to go Heroku, it would instead go to the server with that IP address (which as has been mentioned in comments is an AWS EC2 instance (virtual server). In this case the settings on Heroku are unlikely to be at fault. If the settings on Heroku where the issue then connecting to the domain would just give some general server error, or perhaps a Heroku specific error page, but it wouldn't connect to an alternate server. Whether you where hacked or whether there was a glitch with your DNS provider is unclear based on what you are saying.

The other issue that may have occurred is that the domain may have expired without being renewed. If that happened then someone else could have swooped in and bought it (a very common business model online) and mapped it to their server's IP in order to direct all traffic that used to be going to your site to their site in an attempt to get more traffic and perhaps more business.

The two steps you should take are to check your domain name is still registered, has not expired, and is still owned by you, after which then check with your DNS provider and check the zone file records to see if the records are correct or not and the correct CNAME record is pointing to Heroku.

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