I'm Zen and still not working and very slow.
Can you confirm the dns server(s) you are using. I flushed all the caches, and its working for me in the office....
root@hici:~# dig @212.23.3.100 forums.overclockers.co.uk
; <<>> DiG 9.7.3 <<>> @212.23.3.100 forums.overclockers.co.uk
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11093
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;forums.overclockers.co.uk. IN A
;; ANSWER SECTION:
forums.overclockers.co.uk. 151 IN A 185.103.4.11
;; Query time: 3 msec
;; SERVER: 212.23.3.100#53(212.23.3.100)
;; WHEN: Mon Sep 21 12:50:32 2015
;; MSG SIZE rcvd: 59
root@hici:~# dig @212.23.6.100 forums.overclockers.co.uk
; <<>> DiG 9.7.3 <<>> @212.23.6.100 forums.overclockers.co.uk
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5562
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;forums.overclockers.co.uk. IN A
;; ANSWER SECTION:
forums.overclockers.co.uk. 55 IN A 185.103.4.11
;; Query time: 8 msec
;; SERVER: 212.23.6.100#53(212.23.6.100)
;; WHEN: Mon Sep 21 12:50:38 2015
;; MSG SIZE rcvd: 59