良くつかう正規表現Regular Expressionの一覧。

IP Address

\d+\.\d+\.\d+\.\d+
(\\d+)\.(\\d+)\.(\\d+)\.(\\d+)  
(\\d{1,3})\.(\\d{1,3})\.(\\d{1,3})\.(\\d{1,3})
(25[0-5]|(2[0-4]|1[0-9]|[1-9])?[0-9]\.){3}(25[0-5]|(2[0-4]|1[0-9]|[1-9])?[0-9])
(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])

MAC Address

[A-Fa-f0-9]{12}
※12桁区切り文字無し。

Mail Address

[!#-9A-~]+@+[a-z0-9]+.+[^.]$

Web Site

(https?|ftp)(:\/\/[-_.!~*\'()a-zA-Z0-9;\/?:\@&=+\$,%#]+)$