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External Data Source

Source

Regular Expression
^([01][0-9][0-9]|2[0-4][0-9]|25[0-5].[01][0-9][0-9]|2[0-4][0-9]|25[0-5].[01][0-9][0-9]|2[0-4][0-9]|25[0-5].[01][0-9][0-9]|2[0-4][0-9]|25[0-5])$