DNS failure on Cooperative Bank

[#1]

Since last night I have been unable to get through to the Cooperative Bank.
I have phoned them and they know of no problem.
It appears to be a DNS problem: using two of the PlusNet servers and two OpenDNS ones I get
[tt]for s in 212.159.6.9 212.159.6.10 208.67.220.220 208.67.222.222; do host www.cooperativebank.co.uk ${s}; done
Using domain server:
Name: 212.159.6.9
Address: 212.159.6.9#53
Aliases:
Host www.cooperativebank.co.uk not found: 3(NXDOMAIN)
Using domain server:
Name: 212.159.6.10
Address: 212.159.6.10#53
Aliases:
Host www.cooperativebank.co.uk not found: 3(NXDOMAIN)
Using domain server:
Name: 208.67.220.220
Address: 208.67.220.220#53
Aliases:
Host www.cooperativebank.co.uk not found: 3(NXDOMAIN)
Using domain server:
Name: 208.67.222.222
Address: 208.67.222.222#53
Aliases:
Host www.cooperativebank.co.uk not found: 3(NXDOMAIN)
[/tt]
It appears to be just this site:
[tt]for s in 212.159.6.9 212.159.6.10 208.67.220.220 208.67.222.222; do host www.bbc.co.uk ${s}; done
Using domain server:
Name: 212.159.6.9
Address: 212.159.6.9#53
Aliases:
www.bbc.co.uk is an alias for www.bbc.net.uk.
www.bbc.net.uk has address 212.58.244.68
www.bbc.net.uk has address 212.58.244.69
Using domain server:
Name: 212.159.6.10
Address: 212.159.6.10#53
Aliases:
www.bbc.co.uk is an alias for www.bbc.net.uk.
www.bbc.net.uk has address 212.58.244.71
www.bbc.net.uk has address 212.58.244.70
Using domain server:
Name: 208.67.220.220
Address: 208.67.220.220#53
Aliases:
www.bbc.co.uk is an alias for www.bbc.net.uk.
www.bbc.net.uk has address 212.58.244.68
www.bbc.net.uk has address 212.58.244.69
Using domain server:
Name: 208.67.222.222
Address: 208.67.222.222#53
Aliases:
www.bbc.co.uk is an alias for www.bbc.net.uk.
www.bbc.net.uk has address 212.58.244.71
www.bbc.net.uk has address 212.58.244.70
[/tt]
Help 8((
Chris

[#2]

Perhaps try http://www.co-operativebank.co.uk ? 

[#3]

Brilliant!!!
I've been using cooperativebank.co.uk ever since I go an online account -- it's a bookmark in my toolbar -- and they've been horrid and spiteful and taken it away 
Thank you -- I've spent all morning on this, searching frantically in the wrong place...
Chris