hmm, maybe it is in your DNS cache or utterly firewalled from the UK

    % whois discokenny.com
    ... snip ...
    NS1.NAMEDNSSERVERS.COM         38.106.76.52
    NS2.NAMEDNSSERVERS.COM         38.106.76.53

    % traceroute 38.106.76.52
    ...snip...
    4  vlan128.10ge.lon3.uk.griffin.com (217.79.112.98)  21.697 ms  19.927 ms  19.757 ms
    5  vl423.mpd01.lon01.atlas.cogentco.com (149.6.2.177)  28.760
    ...snip...
    9  te4-2.mpd01.ewr03.atlas.cogentco.com (154.54.1.30)  219.641 ms 
    10  38.104.188.146 (38.104.188.146)  97.547 ms  109.962 ms  96.691 ms
    11  38.106.76.52 (38.106.76.52)  100.634 ms  99.136 ms  99.728 ms

    % host discokenny.com 38.106.76.52
    ;; connection timed out; no servers could be reached
    % host discokenny.com 38.106.76.53
    ;; connection timed out; no servers could be reached

    # nmap -PN  38.106.76.52
    All 1715 scanned ports on 38.106.76.52 are filtered

Oh and running mail and DNS on the same box. I hope they know how to administer secure installations. It's not a risk I would be taking.

it's back % host discokenny.com discokenny.com A 38.106.76.52