To change the nameservers for your domain name, please follow these instructions:
1Login to your 123-reg control panel.
2In the Domain names section, select the relevant domain name in the drop-down list and click on the Manage button.
3If you are changing a top level domain i.e. .com, .net etc, you will need to unlock the domain name first. This can be done by selecting the Manage Domain Locking option and clicking on the Unlock domain link. Once the domain has been unlocked click on the Back to Control Panel link.
4Select the Change Nameservers option.
5Enter your nameserver records into the relevant boxes. If the IP addresses are required you will be asked for these as well.
6Click on the Change Nameservers (DNS) button.
7You can now change your Nameservers, or even reset them to the 123-reg default. Click the Update button to complete the process.