An IP address. An IP address is a group of $4$ integers separated by the dot character $"."($which is also a special character in regular expressions and needs to be escaped$).$ Each integer can be one to three digits. The standard defines each integer to be in the range of $0$ to $255($inclusive$)$ but we are going to ignore this $($that is$,$ we are allowing each integer to be in the range of $0$ to $999$ inclusive$).$ For example, the IP address of FSU's web site $($www$.$uncfsu.edu$)$ is $"208\mathrm{.}115\mathrm{.}107\mathrm{.}179"$