ip address

[#1]

Hi Guys
I run a forum and have access to peeps ip addresses etc, one of our members is with plusnet and is able to set his ip address to say his web domain.  Can anyone tell me how this is done?
Regards,
Dave

[#2]

I imagine they have a static IP (5ukp one off charge) and has asked for his rDNS to be set to their domain (just have to raise a support request).

[#3]

Cheers @clearx