Site not working after a DNS change
What to check when the site does not work or shows the old version after changing nameservers or A records.
After changing nameservers or DNS records the changes do not show everywhere immediately. Before looking for a fault, check whether the change has been applied at all.
Symptoms#
- the site does not open or shows the registrar's page or a parked page,
- you see the old site or the server's default page,
- the site works on one network or device and not elsewhere,
- email does not arrive after the change.
Causes#
- the DNS change is still propagating (DNS propagation),
- nameservers were entered wrongly or only partly (Point your domain),
- leftover records at the old DNS or an A record pointing to the wrong IP address,
- the domain was not added in cPanel as the main or an addon domain,
- your computer uses a hosts entry or cache (Preview your site before DNS),
- missing or wrong MX records.
Fix#
- Check the nameservers at the registrar: they must be exactly rea.scyhost.com and zara.scyhost.com, with no spaces or old entries.
- Check the records with a public DNS lookup tool and compare them with what is expected (DNS records explained).
- Check the hosts file and delete the line you added for testing.
- Clear the cache of the browser and of DNS on your computer (
ipconfig /flushdnson Windows) and try from a mobile network. - In cPanel check that the domain has been added (Domains) and points to the right folder.
- Wait and check again. We cannot guarantee the exact duration because it depends on the caching of individual providers.
Ticket#
If enough time has passed, open a ticket with the domain, the time of the change, the DNS lookup results and the registrar.
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