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External Data Source

Source

Regular Expression
(^|\s|(\[))(::)?([a-f\d]{1,4}::?){0,7}(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}(?=(?(2)\]|($|\s|(?(3)($|\s)|(?(4)($|\s)|:\d)))))|((?(3)[a-f\d]{1,4})|(?(4)[a-f\d]{1,4}))(?=(?(2)\]|($|\s))))(?(2)\])(:\d{1,5})?