To make changes to your DNS records, go the the Domains page in your account and click on the domain you want to work with. Here you can modify the name servers and DNS records.
If you decide to host your website somewhere other than Weebly, then you'll likely be given instructions on which records to change. Your new host should provide you with either nameservers (ns1.example.com), IP Addresses for use with A Records (eg, 126.96.36.199), or CNAME Records (ghs.google.com).
In this example we'll look at how to change nameservers, but all of the other records can be viewed and modified via the edit link in the DNS Records panel. Click Change and confirm that you are sure you want to modify your nameservers on the warning message. This might seem excessive, but these settings should not be edited unless you have been given nameservers by another host.
In the following window, enter the nameservers for your new host and click save.
Please keep in mind: Changing your nameservers will cause your website and any email service connected to your domain to go offline. Your DNS records will need to be reconfigured with your new host. If you want to build a website with another host but continue managing your domain through Weebly and avoid interruptions to services, then you should ask your new host for instructions on pointing your A-Records or CNAMES instead of nameservers.
Note also that any changes to DNS records can take up to 24 hours to fully propagate.
If you change your mind and want to use Weebly as your host again, just click the Set to Default button to switch everything back.