| packages/nixpkgs/perlPackages.NetPing | Check a remote host for reachability |
| packages/nixpkgs/perlPackages.NetAsyncPing | Asyncronously check remote host for reachability |
| packages/nixpkgs/perlPackages.DataValidateDomain | Domain and host name validation |
| packages/nixpkgs/perlPackages.LWPUserAgentDNSHosts | Override LWP HTTP/HTTPS request's host like /etc/hosts |
| packages/nixpkgs/perlPackages.URISmartURI | Subclassable and hostless URIs |
| packages/nixpkgs/perlPackages.AnyEventFastPing | Quickly ping a large number of hosts |
| packages/nixpkgs/perlPackages.SysHostnameLong | Try every conceivable way to get full hostname |