AnySubdomainRegex returns a Regexp object initialized to match any DNS subdomain name.

AnySubdomainRegexString returns a regular expression string to match any DNS subdomain name.

CopyString return a new string variable with the same value as the parameter.

IPv6NibbleFormat expects an IPv6 address in the ip parameter and returns the address in nibble format.

RemoveAsteriskLabel returns the provided DNS name with all asterisk labels removed.

ReverseIP returns an IP address that is the ip parameter with the numbers reversed.

ReverseString returns the characters of the argument string in reverse order.

SubdomainRegex returns a Regexp object initialized to match subdomain names that end with the domain provided by the parameter.

SubdomainRegexString returns a regular expression string that matchs subdomain names ending with the domain provided by the parameter.

SUBRE is a regular expression that will match on all subdomains once the domain is appended.