Show pageOld revisionsBacklinksExport to PDFBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== FQDN RegEx ====== Valid as per RFC 1123. Originally, RFC 952 specified that hostname segments could not start with a digit. <code>^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])\.$</code> general/regex/hostname.txt Last modified: 2019/10/31 09:05by 127.0.0.1