whmcsDNSManager/modules/addons/DNSManager2/templates/clientarea/default/pages/dashboard/status/domainAvailable.tpl

<div class="panel panel-danger">
    <div class="panel-heading">
        <h1>{$MGLANG->T('edit_zone')} - <font color="#A94442" style="font-weight:700">{$zone_name}</font>
            <span class="pull-right">
                <i style="color:#A94442" class="fa fa-exclamation-triangle fa-2x"></i>
            </span>
        </h1>
    </div>
            
    <div class="panel-body">
        <h4 style="padding-bottom: 10px">Status: {$MGLANG->T('domain_is_not_registered')}</h4>
        <p>{$content}</p>
    </div>
</div>