BooK writes on perl5-porters:

Just a PSA that the perldoc.pl domain has not been renewed and its registrant is sadly still out of contact. I have an option on the domain which will allow me to take ownership in a month, but until then (or the domain is renewed) it will not function. Robert has updated perldoc.perl.org to bypass the domain, so please update your links if you are still using perldoc.pl.

-Dan