Problem #

You see the following error while using Nominet for domain registrations:

Error Connecting to ssl://epp.nominet.org.uk on port 700

Cause #

This error indicates that your firewall is blocking the connection or you have not whitelisted your IP address with Nominet.

Solution #

There are multiple ways to resolve this issue, depending on the cause:

Firewall Ports #

If you use a self-hosted WHMCS installation, check to ensure that port 700 is open in your server’s firewall.

Whitelist your IP Address with Nominet #

Open a ticket with Nominet to request access to use your Nominet account via EPP using your server’s IP address. You can find the IP address in WHMCS at Help () > License Information.

Last modified: 2025 October 17