I don't know if any of the following is a help but I seem to recall that site behaving oddly in the past.
[Duo2 ~]$ host -a www2.smo.uhi.ac.uk
Trying "www2.smo.uhi.ac.uk"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58751
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www2.smo.uhi.ac.uk. IN ANY
;; ANSWER SECTION:
www2.smo.uhi.ac.uk. 7199 IN CNAME tarbh.smo.uhi.ac.uk.
Received 56 bytes from 8.8.8.8#53 in 71 ms
[Duo2 ~]$ whois -a www2.smo.uhi.ac.uk
[Querying whois.ja.net]
[whois.ja.net]
No such domain www2.smo.uhi.ac.uk
[Duo2 ~]$ host -a tarbh.smo.uhi.ac.uk
Trying "tarbh.smo.uhi.ac.uk"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61411
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;tarbh.smo.uhi.ac.uk. IN ANY
;; ANSWER SECTION:
tarbh.smo.uhi.ac.uk. 7199 IN A 194.35.194.95
Received 53 bytes from 8.8.8.8#53 in 99 ms
[Duo2 ~]$ whois -a tarbh.smo.uhi.ac.uk
[Querying whois.ja.net]
[whois.ja.net]
No such domain tarbh.smo.uhi.ac.uk
[Duo2 ~]$ host -a 194.35.194.95
Trying "95.194.35.194.in-addr.arpa"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21220
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;95.194.35.194.in-addr.arpa. IN PTR
;; ANSWER SECTION:
95.194.35.194.in-addr.arpa. 21599 IN PTR tarbh.smo.uhi.ac.uk.
Received 77 bytes from 8.8.8.8#53 in 76 ms
[Duo2 ~]$ ping -c1 194.35.194.95
PING 194.35.194.95 (194.35.194.95) 56(84) bytes of data.
--- 194.35.194.95 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 10000ms
[Duo2 ~]$