The 'Public Suffix List' (https://publicsuffix.org/) is a collection of top-level domains ('TLDs') which include global top-level domainsa ('gTLDs') such as '.com' and '.net'; country top-level domains ('ccTLDs') such as '.de' and '.cn'; and, brand top-level domains such as '.apple' and '.google'. Tools are provided to extract internet domain components using the public suffix list base data.

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