1. Login to your 123 Reg control panel.
2. In the Domain names section, select the relevant domain name in the drop-down list and click on the Manage button.
3. If 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.
4. Click on the Change Nameservers (DNS) button.
5. You can now change your nameservers. Click the Update button to complete the process.
6. PLEASE NOTE OUR NAMESERVERS ARE AS FOLLOWS:
ns1.ascend.host
ns2.ascend.host
ns3.ascend.host